1
H
2
He
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
19
K
20
Ca
21
Sc
22
Ti
23
V
23
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
55
Cs
56
Ba
71
Lu
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
87
Fr
88
Ra
103
Lr
104
Rf
105
Db
106
Sg
107
Bh
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
Name: Hydrogen
Symbol: H
Atomic Number: 1
Atomic Mass: 1.00794 amu
Melting Point: -259.14 °C (14.009985 K, -434.45203 °F)
Boiling Point: -252.87 °C (20.280005 K, -423.166 °F)
Number of Protons/Electrons: 1
Number of Neutrons: 0
Classification: Non-metal
Crystal Structure: Hexagonal
Density @ 293 K: 0.08988 g/cm3
Color: colorless
Name: Helium
Symbol: He
Atomic Number: 2
Atomic Mass: 4.002602 amu
Melting Point: -272.0 °C (1.15 K, -457.6 °F)
Boiling Point: -268.6 °C (4.549994 K, -451.48 °F)
Number of Protons/Electrons: 2
Number of Neutrons: 2
Classification: Noble Gas
Crystal Structure: Hexagonal
Density @ 293 K: 0.1785 g/cm3
Color: colorless
Name: Lithium
Symbol: Li
Atomic Number: 3
Atomic Mass: 6.941 amu
Melting Point: 180.54 °C (453.69 K, 356.972 °F)
Boiling Point: 1347.0 °C (1620.15 K, 2456.6 °F)
Number of Protons/Electrons: 3
Number of Neutrons: 4
Classification: Alkali Metal
Crystal Structure: Cubic
Density @ 293 K: 0.53 g/cm3
Color: silvery
Name: Beryllium
Symbol: Be
Atomic Number: 4
Atomic Mass: 9.012182 amu
Melting Point: 1278.0 °C (1551.15 K, 2332.4 °F)
Boiling Point: 2970.0 °C (3243.15 K, 5378.0 °F)
Number of Protons/Electrons: 4
Number of Neutrons: 5
Classification: Alkaline Earth
Crystal Structure: Hexagonal
Density @ 293 K: 1.8477 g/cm3
Color: gray
Name: Boron
Symbol: B
Atomic Number: 5
Atomic Mass: 10.811 amu
Melting Point: 2300.0 °C (2573.15 K, 4172.0 °F)
Boiling Point: 2550.0 °C (2823.15 K, 4622.0 °F)
Number of Protons/Electrons: 5
Number of Neutrons: 6
Classification: Metalloid
Crystal Structure: Rhombohedral
Density @ 293 K: 2.34 g/cm3
Color: brownish
Name: Carbon
Symbol: C
Atomic Number: 6
Atomic Mass: 12.0107 amu
Melting Point: 3500.0 °C (3773.15 K, 6332.0 °F)
Boiling Point: 4827.0 °C (5100.15 K, 8720.6 °F)
Number of Protons/Electrons: 6
Number of Neutrons: 6
Classification: Non-metal
Crystal Structure: Hexagonal
Density @ 293 K: 2.62 g/cm3
Color: May be black
Name: Nitrogen
Symbol: N
Atomic Number: 7
Atomic Mass: 14.00674 amu
Melting Point: -209.9 °C (63.250008 K, -345.81998 °F)
Boiling Point: -195.8 °C (77.35 K, -320.44 °F)
Number of Protons/Electrons: 7
Number of Neutrons: 7
Classification: Non-metal
Crystal Structure: Hexagonal
Density @ 293 K: 1.2506 g/cm3
Color: colorless
Name: Oxygen
Symbol: O
Atomic Number: 8
Atomic Mass: 15.9994 amu
Melting Point: -218.4 °C (54.750008 K, -361.12 °F)
Boiling Point: -183.0 °C (90.15 K, -297.4 °F)
Number of Protons/Electrons: 8
Number of Neutrons: 8
Classification: Non-metal
Crystal Structure: Cubic
Density @ 293 K: 1.429 g/cm3
Color: colorless
Name: Fluorine
Symbol: F
Atomic Number: 9
Atomic Mass: 18.998404 amu
Melting Point: -219.62 °C (53.530006 K, -363.31598 °F)
Boiling Point: -188.14 °C (85.01 K, -306.652 °F)
Number of Protons/Electrons: 9
Number of Neutrons: 10
Classification: Halogen
Crystal Structure: Cubic
Density @ 293 K: 1.696 g/cm3
Color: Greenish
Name: Neon
Symbol: Ne
Atomic Number: 10
Atomic Mass: 20.1797 amu
Melting Point: -248.6 °C (24.549994 K, -415.48 °F)
Boiling Point: -246.1 °C (27.049994 K, -410.98 °F)
Number of Protons/Electrons: 10
Number of Neutrons: 10
Classification: Noble Gas
Crystal Structure: Cubic
Density @ 293 K: 0.901 g/cm3
Color: colorless
Name: Sodium
Symbol: Na
Atomic Number: 11
Atomic Mass: 22.98977 amu
Melting Point: 97.72 °C (370.87 K, 207.9 °F)
Boiling Point: 883 °C (1156 K, 1621 °F)
Number of Protons/Electrons: 11
Number of Neutrons: 12
Classification: Alkali Metal
Crystal Structure: Cubic
Density @ 293 K: 0.971 g/cm3
Color: silvery
Name: Magnesium
Symbol: Mg
Atomic Number: 12
Atomic Mass: 24.305 amu
Melting Point: 650.0 °C (923.15 K, 1202.0 °F)
Boiling Point: 1107.0 °C (1380.15 K, 2024.6 °F)
Number of Protons/Electrons: 12
Number of Neutrons: 12
Classification: Alkaline Earth
Crystal Structure: Hexagonal
Density @ 293 K: 1.738 g/cm3
Color: grayish
Name: Aluminum
Symbol: Al
Atomic Number: 13
Atomic Mass: 26.981539 amu
Melting Point: 660.37 °C (933.52 K, 1220.666 °F)
Boiling Point: 2467.0 °C (2740.15 K, 4472.6 °F)
Number of Protons/Electrons: 13
Number of Neutrons: 14
Classification: Other Metals
Crystal Structure: Cubic
Density @ 293 K: 2.702 g/cm3
Color: Silver
Name: Silicon
Symbol: Si
Atomic Number: 14
Atomic Mass: 28.0855 amu
Melting Point: 1410.0 °C (1683.15 K, 2570.0 °F)
Boiling Point: 2355.0 °C (2628.15 K, 4271.0 °F)
Number of Protons/Electrons: 14
Number of Neutrons: 14
Classification: Metalloid
Crystal Structure: Cubic
Density @ 293 K: 2.329 g/cm3
Color: grey
Name: Phosphorus
Symbol: P
Atomic Number: 15
Atomic Mass: 30.97376 amu
Melting Point: 44.1 °C (317.25 K, 111.38 °F)
Boiling Point: 280.0 °C (553.15 K, 536.0 °F)
Number of Protons/Electrons: 15
Number of Neutrons: 16
Classification: Non-metal
Crystal Structure: Monoclinic
Density @ 293 K: 1.82 g/cm3
Color: white
Name: Sulfur
Symbol: S
Atomic Number: 16
Atomic Mass: 32.066 amu
Melting Point: 112.8 °C (385.95 K, 235.04001 °F)
Boiling Point: 444.6 °C (717.75 K, 832.28 °F)
Number of Protons/Electrons: 16
Number of Neutrons: 16
Classification: Non-metal
Crystal Structure: Orthorhombic
Density @ 293 K: 2.07 g/cm3
Color: yellow
Name: Chlorine
Symbol: Cl
Atomic Number: 17
Atomic Mass: 35.4527 amu
Melting Point: -100.98 °C (172.17 K, -149.764 °F)
Boiling Point: -34.6 °C (238.55 K, -30.279997 °F)
Number of Protons/Electrons: 17
Number of Neutrons: 18
Classification: Halogen
Crystal Structure: Orthorhombic
Density @ 293 K: 3.214 g/cm3
Color: green
Name: Argon
Symbol: Ar
Atomic Number: 18
Atomic Mass: 39.948 amu
Melting Point: -189.3 °C (83.85 K, -308.74 °F)
Boiling Point: -186.0 °C (87.15 K, -302.8 °F)
Number of Protons/Electrons: 18
Number of Neutrons: 22
Classification: Noble Gas
Crystal Structure: Cubic
Density @ 293 K: 1.784 g/cm3
Color: Colorless Gas
Name: Potassium
Symbol: K
Atomic Number: 19
Atomic Mass: 39.0983 amu
Melting Point: 63.65 °C (336.8 K, 146.57 °F)
Boiling Point: 774.0 °C (1047.15 K, 1425.2 °F)
Number of Protons/Electrons: 19
Number of Neutrons: 20
Classification: Alkali Metal
Crystal Structure: Cubic
Density @ 293 K: 0.862 g/cm3
Color: silvery
Name: Calcium
Symbol: Ca
Atomic Number: 20
Atomic Mass: 40.078 amu
Melting Point: 839.0 °C (1112.15 K, 1542.2 °F)
Boiling Point: 1484.0 °C (1757.15 K, 2703.2 °F)
Number of Protons/Electrons: 20
Number of Neutrons: 20
Classification: Alkaline Earth
Crystal Structure: Cubic
Density @ 293 K: 1.55 g/cm3
Color: Silvery
Name: Scandium
Symbol: Sc
Atomic Number: 21
Atomic Mass: 44.95591 amu
Melting Point: 1539.0 °C (1812.15 K, 2802.2 °F)
Boiling Point: 2832.0 °C (3105.15 K, 5129.6 °F)
Number of Protons/Electrons: 21
Number of Neutrons: 24
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 2.989 g/cm3
Color: silvery
Name: Titanium
Symbol: Ti
Atomic Number: 22
Atomic Mass: 47.867 amu
Melting Point: 1660.0 °C (1933.15 K, 3020.0 °F)
Boiling Point: 3287.0 °C (3560.15 K, 5948.6 °F)
Number of Protons/Electrons: 22
Number of Neutrons: 26
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 4.54 g/cm3
Color: silverish
Name: Vanadium
Symbol: V
Atomic Number: 23
Atomic Mass: 50.9415 amu
Melting Point: 1890.0 °C (2163.15 K, 3434.0 °F)
Boiling Point: 3380.0 °C (3653.15 K, 6116.0 °F)
Number of Protons/Electrons: 23
Number of Neutrons: 28
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 5.8 g/cm3
Color: Silverish
Name: Chromium
Symbol: Cr
Atomic Number: 24
Atomic Mass: 51.9961 amu
Melting Point: 1857.0 °C (2130.15 K, 3374.6 °F)
Boiling Point: 2672.0 °C (2945.15 K, 4841.6 °F)
Number of Protons/Electrons: 24
Number of Neutrons: 28
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 7.19 g/cm3
Color: gray
Name: Manganese
Symbol: Mn
Atomic Number: 25
Atomic Mass: 54.93805 amu
Melting Point: 1245.0 °C (1518.15 K, 2273.0 °F)
Boiling Point: 1962.0 °C (2235.15 K, 3563.6 °F)
Number of Protons/Electrons: 25
Number of Neutrons: 30
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 7.43 g/cm3
Color: silverish/grayish
Name: Iron
Symbol: Fe
Atomic Number: 26
Atomic Mass: 55.845 amu
Melting Point: 1535.0 °C (1808.15 K, 2795.0 °F)
Boiling Point: 2750.0 °C (3023.15 K, 4982.0 °F)
Number of Protons/Electrons: 26
Number of Neutrons: 30
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 7.86 g/cm3
Color: Silvery
Name: Cobalt
Symbol: Co
Atomic Number: 27
Atomic Mass: 58.9332 amu
Melting Point: 1495.0 °C (1768.15 K, 2723.0 °F)
Boiling Point: 2870.0 °C (3143.15 K, 5198.0 °F)
Number of Protons/Electrons: 27
Number of Neutrons: 32
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 8.9 g/cm3
Color: silver
Name: Nickel
Symbol: Ni
Atomic Number: 28
Atomic Mass: 58.6934 amu
Melting Point: 1453.0 °C (1726.15 K, 2647.4 °F)
Boiling Point: 2732.0 °C (3005.15 K, 4949.6 °F)
Number of Protons/Electrons: 28
Number of Neutrons: 31
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 8.902 g/cm3
Color: white
Name: Copper
Symbol: Cu
Atomic Number: 29
Atomic Mass: 63.546 amu
Melting Point: 1083.0 °C (1356.15 K, 1981.4 °F)
Boiling Point: 2567.0 °C (2840.15 K, 4652.6 °F)
Number of Protons/Electrons: 29
Number of Neutrons: 35
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 8.96 g/cm3
Color: red/orange
Name: Zinc
Symbol: Zn
Atomic Number: 30
Atomic Mass: 65.39 amu
Melting Point: 419.58 °C (692.73 K, 787.24396 °F)
Boiling Point: 907.0 °C (1180.15 K, 1664.6 °F)
Number of Protons/Electrons: 30
Number of Neutrons: 35
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 7.133 g/cm3
Color: bluish
Name: Gallium
Symbol: Ga
Atomic Number: 31
Atomic Mass: 69.723 amu
Melting Point: 29.78 °C (302.93 K, 85.604004 °F)
Boiling Point: 2403.0 °C (2676.15 K, 4357.4 °F)
Number of Protons/Electrons: 31
Number of Neutrons: 39
Classification: Other Metals
Crystal Structure: Orthorhombic
Density @ 293 K: 5.907 g/cm3
Color: White/Silver
Name: Germanium
Symbol: Ge
Atomic Number: 32
Atomic Mass: 72.61 amu
Melting Point: 937.4 °C (1210.55 K, 1719.3201 °F)
Boiling Point: 2830.0 °C (3103.15 K, 5126.0 °F)
Number of Protons/Electrons: 32
Number of Neutrons: 41
Classification: Metalloid
Crystal Structure: Cubic
Density @ 293 K: 5.323 g/cm3
Color: grayish
Name: Arsenic
Symbol: As
Atomic Number: 33
Atomic Mass: 74.9216 amu
Melting Point: 817.0 °C (1090.15 K, 1502.6 °F)
Boiling Point: 613.0 °C (886.15 K, 1135.4 °F)
Number of Protons/Electrons: 33
Number of Neutrons: 42
Classification: Metalloid
Crystal Structure: Rhombohedral
Density @ 293 K: 5.72 g/cm3
Color: Gray
Name: Selenium
Symbol: Se
Atomic Number: 34
Atomic Mass: 78.96 amu
Melting Point: 217.0 °C (490.15 K, 422.6 °F)
Boiling Point: 684.9 °C (958.05005 K, 1264.8201 °F)
Number of Protons/Electrons: 34
Number of Neutrons: 45
Classification: Non-metal
Crystal Structure: Hexagonal
Density @ 293 K: 4.79 g/cm3
Color: gray
Name: Bromine
Symbol: Br
Atomic Number: 35
Atomic Mass: 79.904 amu
Melting Point: -7.2 °C (265.95 K, 19.04 °F)
Boiling Point: 58.78 °C (331.93 K, 137.804 °F)
Number of Protons/Electrons: 35
Number of Neutrons: 45
Classification: Halogen
Crystal Structure: Orthorhombic
Density @ 293 K: 3.119 g/cm3
Color: Red
Name: Krypton
Symbol: Kr
Atomic Number: 36
Atomic Mass: 83.8 amu
Melting Point: -157.2 °C (115.950005 K, -250.95999 °F)
Boiling Point: -153.4 °C (119.75001 K, -244.12 °F)
Number of Protons/Electrons: 36
Number of Neutrons: 48
Classification: Noble Gas
Crystal Structure: Cubic
Density @ 293 K: 3.74 g/cm3
Color: colorless gas
Name: Rubidium
Symbol: Rb
Atomic Number: 37
Atomic Mass: 85.4678 amu
Melting Point: 38.89 °C (312.04 K, 102.002 °F)
Boiling Point: 688.0 °C (961.15 K, 1270.4 °F)
Number of Protons/Electrons: 37
Number of Neutrons: 48
Classification: Alkali Metal
Crystal Structure: Cubic
Density @ 293 K: 1.532 g/cm3
Color: silver
Name: Strontium
Symbol: Sr
Atomic Number: 38
Atomic Mass: 87.62 amu
Melting Point: 769.0 °C (1042.15 K, 1416.2 °F)
Boiling Point: 1384.0 °C (1657.15 K, 2523.2 °F)
Number of Protons/Electrons: 38
Number of Neutrons: 50
Classification: Alkaline Earth
Crystal Structure: Cubic
Density @ 293 K: 2.54 g/cm3
Color: yellowish
Name: Yttrium
Symbol: Y
Atomic Number: 39
Atomic Mass: 88.90585 amu
Melting Point: 1523.0 °C (1796.15 K, 2773.4 °F)
Boiling Point: 3337.0 °C (3610.15 K, 6038.6 °F)
Number of Protons/Electrons: 39
Number of Neutrons: 50
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 4.469 g/cm3
Color: silvery
Name: Zirconium
Symbol: Zr
Atomic Number: 40
Atomic Mass: 91.224 amu
Melting Point: 1852.0 °C (2125.15 K, 3365.6 °F)
Boiling Point: 4377.0 °C (4650.15 K, 7910.6 °F)
Number of Protons/Electrons: 40
Number of Neutrons: 51
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 6.49 g/cm3
Color: Grayish
Name: Niobium
Symbol: Nb
Atomic Number: 41
Atomic Mass: 92.90638 amu
Melting Point: 2468.0 °C (2741.15 K, 4474.4 °F)
Boiling Point: 4927.0 °C (5200.15 K, 8900.6 °F)
Number of Protons/Electrons: 41
Number of Neutrons: 52
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 8.57 g/cm3
Color: white
Name: Molybdenum
Symbol: Mo
Atomic Number: 42
Atomic Mass: 95.94 amu
Melting Point: 2617.0 °C (2890.15 K, 4742.6 °F)
Boiling Point: 4612.0 °C (4885.15 K, 8333.6 °F)
Number of Protons/Electrons: 42
Number of Neutrons: 54
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 10.22 g/cm3
Color: silverish
Name: Technetium
Symbol: Tc
Atomic Number: 43
Atomic Mass: (98.0) amu
Melting Point: 2200.0 °C (2473.15 K, 3992.0 °F)
Boiling Point: 4877.0 °C (5150.15 K, 8810.6 °F)
Number of Protons/Electrons: 43
Number of Neutrons: 55
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 11.5 g/cm3
Color: Unknown
Name: Ruthenium
Symbol: Ru
Atomic Number: 44
Atomic Mass: 101.07 amu
Melting Point: 2250.0 °C (2523.15 K, 4082.0 °F)
Boiling Point: 3900.0 °C (4173.15 K, 7052.0 °F)
Number of Protons/Electrons: 44
Number of Neutrons: 57
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 12.2 g/cm3
Color: silvery
Name: Rhodium
Symbol: Rh
Atomic Number: 45
Atomic Mass: 102.9055 amu
Melting Point: 1966.0 °C (2239.15 K, 3570.8 °F)
Boiling Point: 3727.0 °C (4000.15 K, 6740.6 °F)
Number of Protons/Electrons: 45
Number of Neutrons: 58
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 12.41 g/cm3
Color: silverish
Name: Palladium
Symbol: Pd
Atomic Number: 46
Atomic Mass: 106.42 amu
Melting Point: 1552.0 °C (1825.15 K, 2825.6 °F)
Boiling Point: 2927.0 °C (3200.15 K, 5300.6 °F)
Number of Protons/Electrons: 46
Number of Neutrons: 60
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 12.02 g/cm3
Color: white
Name: Silver
Symbol: Ag
Atomic Number: 47
Atomic Mass: 107.8682 amu
Melting Point: 961.93 °C (1235.08 K, 1763.474 °F)
Boiling Point: 2212.0 °C (2485.15 K, 4013.6 °F)
Number of Protons/Electrons: 47
Number of Neutrons: 61
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 10.5 g/cm3
Color: silver
Name: Cadmium
Symbol: Cd
Atomic Number: 48
Atomic Mass: 112.411 amu
Melting Point: 320.9 °C (594.05 K, 609.62 °F)
Boiling Point: 765.0 °C (1038.15 K, 1409.0 °F)
Number of Protons/Electrons: 48
Number of Neutrons: 64
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 8.65 g/cm3
Color: Silvery
Name: Indium
Symbol: In
Atomic Number: 49
Atomic Mass: 114.818 amu
Melting Point: 156.61 °C (429.76 K, 313.898 °F)
Boiling Point: 2000.0 °C (2273.15 K, 3632.0 °F)
Number of Protons/Electrons: 49
Number of Neutrons: 66
Classification: Other Metals
Crystal Structure: Tetragonal
Density @ 293 K: 7.31 g/cm3
Color: Silverish
Name: Tin
Symbol: Sn
Atomic Number: 50
Atomic Mass: 118.71 amu
Melting Point: 231.9 °C (505.05 K, 449.41998 °F)
Boiling Point: 2270.0 °C (2543.15 K, 4118.0 °F)
Number of Protons/Electrons: 50
Number of Neutrons: 69
Classification: Other Metals
Crystal Structure: Tetragonal
Density @ 293 K: 7.31 g/cm3
Color: white
Name: Antimony
Symbol: Sb
Atomic Number: 51
Atomic Mass: 121.76 amu
Melting Point: 630.0 °C (903.15 K, 1166.0 °F)
Boiling Point: 1750.0 °C (2023.15 K, 3182.0 °F)
Number of Protons/Electrons: 51
Number of Neutrons: 71
Classification: Metalloid
Crystal Structure: Rhombohedral
Density @ 293 K: 6.684 g/cm3
Color: bluish
Name: Tellurium
Symbol: Te
Atomic Number: 52
Atomic Mass: 127.6 amu
Melting Point: 449.5 °C (722.65 K, 841.1 °F)
Boiling Point: 989.8 °C (1262.95 K, 1813.64 °F)
Number of Protons/Electrons: 52
Number of Neutrons: 76
Classification: Metalloid
Crystal Structure: Hexagonal
Density @ 293 K: 6.24 g/cm3
Color: silverish
Name: Iodine
Symbol: I
Atomic Number: 53
Atomic Mass: 126.90447 amu
Melting Point: 113.5 °C (386.65 K, 236.3 °F)
Boiling Point: 184.0 °C (457.15 K, 363.2 °F)
Number of Protons/Electrons: 53
Number of Neutrons: 74
Classification: Halogen
Crystal Structure: Orthorhombic
Density @ 293 K: 4.93 g/cm3
Color: blackish
Name: Xenon
Symbol: Xe
Atomic Number: 54
Atomic Mass: 131.29 amu
Melting Point: -111.9 °C (161.25 K, -169.42 °F)
Boiling Point: -108.1 °C (165.05 K, -162.58 °F)
Number of Protons/Electrons: 54
Number of Neutrons: 77
Classification: Noble Gas
Crystal Structure: Cubic
Density @ 293 K: 5.8971 g/cm3
Color: Colorless Gas
Name: Cesium
Symbol: Cs
Atomic Number: 55
Atomic Mass: 132.90546 amu
Melting Point: 28.5 °C (301.65 K, 83.3 °F)
Boiling Point: 678.4 °C (951.55005 K, 1253.12 °F)
Number of Protons/Electrons: 55
Number of Neutrons: 78
Classification: Alkali Metal
Crystal Structure: Cubic
Density @ 293 K: 1.873 g/cm3
Color: silver
Name: Barium
Symbol: Ba
Atomic Number: 56
Atomic Mass: 137.327 amu
Melting Point: 725.0 °C (998.15 K, 1337.0 °F)
Boiling Point: 1140.0 °C (1413.15 K, 2084.0 °F)
Number of Protons/Electrons: 56
Number of Neutrons: 81
Classification: Alkaline Earth
Crystal Structure: Cubic
Density @ 293 K: 3.51 g/cm3
Color: Silver
Name: Lanthanum
Symbol: La
Atomic Number: 57
Atomic Mass: 138.9055 amu
Melting Point: 920.0 °C (1193.15 K, 1688.0 °F)
Boiling Point: 3469.0 °C (3742.15 K, 6276.2 °F)
Number of Protons/Electrons: 57
Number of Neutrons: 82
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 6.7 g/cm3
Color: white
Name: Cerium
Symbol: Ce
Atomic Number: 58
Atomic Mass: 140.116 amu
Melting Point: 795.0 °C (1068.15 K, 1463.0 °F)
Boiling Point: 3257.0 °C (3530.15 K, 5894.6 °F)
Number of Protons/Electrons: 58
Number of Neutrons: 82
Classification: Rare Earth
Crystal Structure: Cubic
Density @ 293 K: 6.773 g/cm3
Color: gray
Name: Praseodymium
Symbol: Pr
Atomic Number: 59
Atomic Mass: 140.90765 amu
Melting Point: 935.0 °C (1208.15 K, 1715.0 °F)
Boiling Point: 3127.0 °C (3400.15 K, 5660.6 °F)
Number of Protons/Electrons: 59
Number of Neutrons: 82
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 6.77 g/cm3
Color: Unknown
Name: Neodymium
Symbol: Nd
Atomic Number: 60
Atomic Mass: 144.24 amu
Melting Point: 1010.0 °C (1283.15 K, 1850.0 °F)
Boiling Point: 3127.0 °C (3400.15 K, 5660.6 °F)
Number of Protons/Electrons: 60
Number of Neutrons: 84
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 7.007 g/cm3
Color: silvery
Name: Promethium
Symbol: Pm
Atomic Number: 61
Atomic Mass: (145.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 61
Number of Neutrons: 84
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 6.475 g/cm3
Color: Unknown
Name: Samarium
Symbol: Sm
Atomic Number: 62
Atomic Mass: 150.36 amu
Melting Point: 1072.0 °C (1345.15 K, 1961.6 °F)
Boiling Point: 1900.0 °C (2173.15 K, 3452.0 °F)
Number of Protons/Electrons: 62
Number of Neutrons: 88
Classification: Rare Earth
Crystal Structure: Rhombohedral
Density @ 293 K: 7.54 g/cm3
Color: silver
Name: Europium
Symbol: Eu
Atomic Number: 63
Atomic Mass: 151.964 amu
Melting Point: 822.0 °C (1095.15 K, 1511.6 °F)
Boiling Point: 1597.0 °C (1870.15 K, 2906.6 °F)
Number of Protons/Electrons: 63
Number of Neutrons: 89
Classification: Rare Earth
Crystal Structure: Cubic
Density @ 293 K: 5.259 g/cm3
Color: silver
Name: Gadolinium
Symbol: Gd
Atomic Number: 64
Atomic Mass: 157.25 amu
Melting Point: 1311.0 °C (1584.15 K, 2391.8 °F)
Boiling Point: 3233.0 °C (3506.15 K, 5851.4 °F)
Number of Protons/Electrons: 64
Number of Neutrons: 93
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 7.895 g/cm3
Color: Silverish
Name: Terbium
Symbol: Tb
Atomic Number: 65
Atomic Mass: 158.92534 amu
Melting Point: 1360.0 °C (1633.15 K, 2480.0 °F)
Boiling Point: 3041.0 °C (3314.15 K, 5505.8 °F)
Number of Protons/Electrons: 65
Number of Neutrons: 94
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 8.27 g/cm3
Color: silverish
Name: Dysprosium
Symbol: Dy
Atomic Number: 66
Atomic Mass: 162.5 amu
Melting Point: 1412.0 °C (1685.15 K, 2573.6 °F)
Boiling Point: 2562.0 °C (2835.15 K, 4643.6 °F)
Number of Protons/Electrons: 66
Number of Neutrons: 97
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 8.536 g/cm3
Color: Unknown
Name: Holmium
Symbol: Ho
Atomic Number: 67
Atomic Mass: 164.93031 amu
Melting Point: 1470.0 °C (1743.15 K, 2678.0 °F)
Boiling Point: 2720.0 °C (2993.15 K, 4928.0 °F)
Number of Protons/Electrons: 67
Number of Neutrons: 98
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 8.54 g/cm3
Color: Silver
Name: Erbium
Symbol: Er
Atomic Number: 68
Atomic Mass: 167.26 amu
Melting Point: 1522.0 °C (1795.15 K, 2771.6 °F)
Boiling Point: 2510.0 °C (2783.15 K, 4550.0 °F)
Number of Protons/Electrons: 68
Number of Neutrons: 99
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 8.795 g/cm3
Color: grayish
Name: Thulium
Symbol: Tm
Atomic Number: 69
Atomic Mass: 168.9342 amu
Melting Point: 1545.0 °C (1818.15 K, 2813.0 °F)
Boiling Point: 1727.0 °C (2000.15 K, 3140.6 °F)
Number of Protons/Electrons: 69
Number of Neutrons: 100
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 9.321 g/cm3
Color: silverish
Name: Ytterbium
Symbol: Yb
Atomic Number: 70
Atomic Mass: 173.04 amu
Melting Point: 824.0 °C (1097.15 K, 1515.2 °F)
Boiling Point: 1466.0 °C (1739.15 K, 2670.8 °F)
Number of Protons/Electrons: 70
Number of Neutrons: 103
Classification: Rare Earth
Crystal Structure: Cubic
Density @ 293 K: 6.98 g/cm3
Color: Silvery
Name: Lutetium
Symbol: Lu
Atomic Number: 71
Atomic Mass: 174.967 amu
Melting Point: 1656.0 °C (1929.15 K, 3012.8 °F)
Boiling Point: 3315.0 °C (3588.15 K, 5999.0 °F)
Number of Protons/Electrons: 71
Number of Neutrons: 104
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 9.85 g/cm3
Color: silvery
Name: Hafnium
Symbol: Hf
Atomic Number: 72
Atomic Mass: 178.49 amu
Melting Point: 2150.0 °C (2423.15 K, 3902.0 °F)
Boiling Point: 5400.0 °C (5673.15 K, 9752.0 °F)
Number of Protons/Electrons: 72
Number of Neutrons: 106
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 13.2 g/cm3
Color: Silver
Name: Tantalum
Symbol: Ta
Atomic Number: 73
Atomic Mass: 180.9479 amu
Melting Point: 2996.0 °C (3269.15 K, 5424.8 °F)
Boiling Point: 5425.0 °C (5698.15 K, 9797.0 °F)
Number of Protons/Electrons: 73
Number of Neutrons: 108
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 16.654 g/cm3
Color: gray
Name: Tungsten
Symbol: W
Atomic Number: 74
Atomic Mass: 183.84 amu
Melting Point: 3410.0 °C (3683.15 K, 6170.0 °F)
Boiling Point: 5660.0 °C (5933.15 K, 10220.0 °F)
Number of Protons/Electrons: 74
Number of Neutrons: 110
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 19.3 g/cm3
Color: Silver
Name: Rhenium
Symbol: Re
Atomic Number: 75
Atomic Mass: 186.207 amu
Melting Point: 3180.0 °C (3453.15 K, 5756.0 °F)
Boiling Point: 5627.0 °C (5900.15 K, 10160.6 °F)
Number of Protons/Electrons: 75
Number of Neutrons: 111
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 21.02 g/cm3
Color: silverish
Name: Osmium
Symbol: Os
Atomic Number: 76
Atomic Mass: 190.23 amu
Melting Point: 3045.0 °C (3318.15 K, 5513.0 °F)
Boiling Point: 5027.0 °C (5300.15 K, 9080.6 °F)
Number of Protons/Electrons: 76
Number of Neutrons: 114
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 22.4 g/cm3
Color: silvery
Name: Iridium
Symbol: Ir
Atomic Number: 77
Atomic Mass: 192.217 amu
Melting Point: 2410.0 °C (2683.15 K, 4370.0 °F)
Boiling Point: 4527.0 °C (4800.15 K, 8180.6 °F)
Number of Protons/Electrons: 77
Number of Neutrons: 115
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 22.5 g/cm3
Color: white
Name: Platinum
Symbol: Pt
Atomic Number: 78
Atomic Mass: 195.078 amu
Melting Point: 1772.0 °C (2045.15 K, 3221.6 °F)
Boiling Point: 3827.0 °C (4100.15 K, 6920.6 °F)
Number of Protons/Electrons: 78
Number of Neutrons: 117
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 21.45 g/cm3
Color: silverish
Name: Gold
Symbol: Au
Atomic Number: 79
Atomic Mass: 196.96655 amu
Melting Point: 1064.43 °C (1337.5801 K, 1947.9741 °F)
Boiling Point: 2807.0 °C (3080.15 K, 5084.6 °F)
Number of Protons/Electrons: 79
Number of Neutrons: 118
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 19.32 g/cm3
Color: Gold
Name: Mercury
Symbol: Hg
Atomic Number: 80
Atomic Mass: 200.59 amu
Melting Point: -38.87 °C (234.28 K, -37.966 °F)
Boiling Point: 356.58 °C (629.73 K, 673.844 °F)
Number of Protons/Electrons: 80
Number of Neutrons: 121
Classification: Transition Metal
Crystal Structure: Rhombohedral
Density @ 293 K: 13.456 g/cm3
Color: Silver
Name: Thallium
Symbol: Tl
Atomic Number: 81
Atomic Mass: 204.3833 amu
Melting Point: 303.5 °C (576.65 K, 578.3 °F)
Boiling Point: 1457.0 °C (1730.15 K, 2654.6 °F)
Number of Protons/Electrons: 81
Number of Neutrons: 123
Classification: Other Metals
Crystal Structure: Hexagonal
Density @ 293 K: 11.85 g/cm3
Color: bluish
Name: Lead
Symbol: Pb
Atomic Number: 82
Atomic Mass: 207.2 amu
Melting Point: 327.5 °C (600.65 K, 621.5 °F)
Boiling Point: 1740.0 °C (2013.15 K, 3164.0 °F)
Number of Protons/Electrons: 82
Number of Neutrons: 125
Classification: Other Metals
Crystal Structure: Cubic
Density @ 293 K: 11.34 g/cm3
Color: bluish
Name: Bismuth
Symbol: Bi
Atomic Number: 83
Atomic Mass: 208.98038 amu
Melting Point: 271.3 °C (544.45 K, 520.33997 °F)
Boiling Point: 1560.0 °C (1833.15 K, 2840.0 °F)
Number of Protons/Electrons: 83
Number of Neutrons: 126
Classification: Other Metals
Crystal Structure: Rhombohedral
Density @ 293 K: 9.8 g/cm3
Color: white
Name: Polonium
Symbol: Po
Atomic Number: 84
Atomic Mass: (209.0) amu
Melting Point: 254.0 °C (527.15 K, 489.2 °F)
Boiling Point: 962.0 °C (1235.15 K, 1763.6 °F)
Number of Protons/Electrons: 84
Number of Neutrons: 125
Classification: Metalloid
Crystal Structure: Monoclinic
Density @ 293 K: 9.4 g/cm3
Color: Unknown
Name: Astatine
Symbol: At
Atomic Number: 85
Atomic Mass: (210.0) amu
Melting Point: 302.0 °C (575.15 K, 575.6 °F)
Boiling Point: 337.0 °C (610.15 K, 638.6 °F)
Number of Protons/Electrons: 85
Number of Neutrons: 125
Classification: Halogen
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Radon
Symbol: Rn
Atomic Number: 86
Atomic Mass: (222.0) amu
Melting Point: -71.0 °C (202.15 K, -95.8 °F)
Boiling Point: -61.8 °C (211.35 K, -79.24 °F)
Number of Protons/Electrons: 86
Number of Neutrons: 136
Classification: Noble Gas
Crystal Structure: Cubic
Density @ 293 K: 9.73 g/cm3
Color: colorless
Name: Francium
Symbol: Fr
Atomic Number: 87
Atomic Mass: (223.0) amu
Melting Point: 27.0 °C (300.15 K, 80.6 °F)
Boiling Point: 677.0 °C (950.15 K, 1250.6 °F)
Number of Protons/Electrons: 87
Number of Neutrons: 136
Classification: Alkali Metal
Crystal Structure: Cubic
Density @ 293 K: Unknown
Color: Unknown
Name: Radium
Symbol: Ra
Atomic Number: 88
Atomic Mass: (226.0) amu
Melting Point: 700.0 °C (973.15 K, 1292.0 °F)
Boiling Point: 1737.0 °C (2010.15 K, 3158.6 °F)
Number of Protons/Electrons: 88
Number of Neutrons: 138
Classification: Alkaline Earth
Crystal Structure: Cubic
Density @ 293 K: 5.0 g/cm3
Color: silverish
Name: Actinium
Symbol: Ac
Atomic Number: 89
Atomic Mass: (227.0) amu
Melting Point: 1050.0 °C (1323.15 K, 1922.0 °F)
Boiling Point: 3200.0 °C (3473.15 K, 5792.0 °F)
Number of Protons/Electrons: 89
Number of Neutrons: 138
Classification: Rare Earth
Crystal Structure: Cubic
Density @ 293 K: 10.07 g/cm3
Color: Silvery
Name: Thorium
Symbol: Th
Atomic Number: 90
Atomic Mass: 232.0381 amu
Melting Point: 1750.0 °C (2023.15 K, 3182.0 °F)
Boiling Point: 4790.0 °C (5063.15 K, 8654.0 °F)
Number of Protons/Electrons: 90
Number of Neutrons: 142
Classification: Rare Earth
Crystal Structure: Cubic
Density @ 293 K: 11.72 g/cm3
Color: silvery
Name: Protactinium
Symbol: Pa
Atomic Number: 91
Atomic Mass: 231.03587 amu
Melting Point: 1600.0 °C (1873.15 K, 2912.0 °F)
Boiling Point: Unknown
Number of Protons/Electrons: 91
Number of Neutrons: 140
Classification: Rare Earth
Crystal Structure: Orthorhombic
Density @ 293 K: 15.4 g/cm3
Color: Unknown
Name: Uranium
Symbol: U
Atomic Number: 92
Atomic Mass: 238.0289 amu
Melting Point: 1132.0 °C (1405.15 K, 2069.6 °F)
Boiling Point: 3818.0 °C (4091.15 K, 6904.4 °F)
Number of Protons/Electrons: 92
Number of Neutrons: 146
Classification: Rare Earth
Crystal Structure: Orthorhombic
Density @ 293 K: 18.95 g/cm3
Color: silverish
Name: Neptunium
Symbol: Np
Atomic Number: 93
Atomic Mass: (237.0) amu
Melting Point: 640.0 °C (913.15 K, 1184.0 °F)
Boiling Point: 3902.0 °C (4175.15 K, 7055.6 °F)
Number of Protons/Electrons: 93
Number of Neutrons: 144
Classification: Rare Earth
Crystal Structure: Orthorhombic
Density @ 293 K: 20.45 g/cm3
Color: Unknown
Name: Plutonium
Symbol: Pu
Atomic Number: 94
Atomic Mass: (244.0) amu
Melting Point: 639.5 °C (912.65 K, 1183.1 °F)
Boiling Point: 3235.0 °C (3508.15 K, 5855.0 °F)
Number of Protons/Electrons: 94
Number of Neutrons: 150
Classification: Rare Earth
Crystal Structure: Monoclinic
Density @ 293 K: 19.84 g/cm3
Color: Unknown
Name: Americium
Symbol: Am
Atomic Number: 95
Atomic Mass: (243.0) amu
Melting Point: 994.0 °C (1267.15 K, 1821.2 °F)
Boiling Point: 2607.0 °C (2880.15 K, 4724.6 °F)
Number of Protons/Electrons: 95
Number of Neutrons: 148
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 13.6 g/cm3
Color: Unknown
Name: Curium
Symbol: Cm
Atomic Number: 96
Atomic Mass: (247.0) amu
Melting Point: 1340.0 °C (1613.15 K, 2444.0 °F)
Boiling Point: Unknown
Number of Protons/Electrons: 96
Number of Neutrons: 151
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: 13.511 g/cm3
Color: Unknown
Name: Berkelium
Symbol: Bk
Atomic Number: 97
Atomic Mass: (247.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 97
Number of Neutrons: 150
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Californium
Symbol: Cf
Atomic Number: 98
Atomic Mass: (251.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 98
Number of Neutrons: 153
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Einsteinium
Symbol: Es
Atomic Number: 99
Atomic Mass: (252.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 99
Number of Neutrons: 153
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Fermium
Symbol: Fm
Atomic Number: 100
Atomic Mass: (257.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 100
Number of Neutrons: 157
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Mendelevium
Symbol: Md
Atomic Number: 101
Atomic Mass: (258.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 101
Number of Neutrons: 157
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Nobelium
Symbol: No
Atomic Number: 102
Atomic Mass: (259.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 102
Number of Neutrons: 157
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Lawrencium
Symbol: Lr
Atomic Number: 103
Atomic Mass: (262.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 103
Number of Neutrons: 159
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Rutherfordium
Symbol: Rf
Atomic Number: 104
Atomic Mass: (261.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 104
Number of Neutrons: 157
Classification: Transition Metal
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Dubnium
Symbol: Db
Atomic Number: 105
Atomic Mass: (262.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 105
Number of Neutrons: 157
Classification: Transition Metal
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Seaborgium
Symbol: Sg
Atomic Number: 106
Atomic Mass: (263.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 106
Number of Neutrons: 157
Classification: Transition Metal
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
Name: Bohrium
Symbol: Bh
Atomic Number: 107
Atomic Mass: (262.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 107
Number of Neutrons: 155
Classification: Transition Metal
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown

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