H Li Na K Rb Cs Fr
Be
U
Mg Ca Sr Ba Ra
Sc Y La Ac
Ti Zr Hf Rf
V Nb Ta Db
Cr Mo W Sg
Mn Tc Re Bh
Fe Ru Os Hs
Co Rh Ir Mt
Ni Pd Pt
Cu Ag Au
Zn Cd Hg
Al Ga In Ti
Si Ge Sn Pb
P As Sb Bi
S Se Te
Cl Br I
Ar
BCNOFNe
He Kr Xe
Ce Th
Pr Pa
Nd U
Pm Np
Sm Pu
Eu Am
Gd Cm
Tb Bk
Dy Cf
Ho Es
Er Fm
Tm Md
Yb No
Lu Lr
Po
At Rn
The Periodic Table
1
Hydrogen1.0079(^3) Lithium6.941 11
Sodium22.9898
19
Potassium39.0983
37
Rubidium85.4678
55
Cesium132.9054
(^87) Francium(223)
4
Beryllium9.0122
92
Uranium238.0289
12
Magnesium24.3050
(^20) Calcium40.078 (^38) 87.62
Strontium
56
Barium137.327
88
Radium226.0254
21
Scandium44.9559
39
Yttrium88.9059
57
Lanthanum138.9055
89
Actinium227.0278
(^22) Titanium47.88 (^40) 91.224
Zirconium
(^72) Hafnium178.49 (^104) (261)
Rutherfordium
23
Vanadium50.9415
41
Niobium92.9064
73
Tantalum180.9479
(^105) Dubnium(262)
24
Chromium51.9961
(^42) 95.94
Molybdenum
(^74) 183.85
Tungsten^106 Seaborgium(263)
25
Manganese54.9380
(^43) (98)
Technetium
75
Rhenium186.207^107 Bohrium(262)
(^26) Iron55.847 (^44) 101.07
Ruthenium
(^76) Osmium190.2 (^108) Hassium(265)
27
Cobalt58.9332
45
Rhodium102.9055
(^77) Iridium192.22 (^109) (266)
Meitnerium
(^28) Nickel58.693 (^46) 106.42
Palladium
(^78) Platinum195.08110 (269)
(^29) Copper63.546 47
107.8682
Silver^79
196.9665
Gold (^111) (272)
30 Zinc65.39 48
Cadmium112.411
(^80) Mercury200.59 (^112) (277)
13
Aluminum26.9815
(^31) Gallium69.723 (^49) Indium114.82 81
Thallium204.3833
14
Silicon28.0855
(^32) 72.61
Germanium
50
118.710
Tin (^82) Lead207.2
15
Phosphorus30.9738
33
Arsenic74.9216
51
Antimony121.757
83
Bismuth208.9804
(^16) Sulfur32.066 (^34) Selenium78.96 (^52) Tellurium127.60
17
Chlorine35.4527
(^35) Bromine79.904 53
Iodine126.9045
(^18) Argon39.948
5
Boron10.811
6
Carbon12.011
7
Nitrogen14.0067
8
Oxygen15.9994
9
Fluorine18.9984
10
Neon20.1797
2
Helium4.0026^36 Krypton83.80^54 Xenon131.29
58
Cerium140.115
90
Thorium232.0381
59
Praseodymium140.9076
91
Protactinium231.0359
(^60) 144.24
Neodymium
92
Uranium238.0289
(^61) (145)
Promethium
93
Neptunium237.0482
(^62) 150.36
Samarium
(^94) (244)
Plutonium
63
Europium151.965
(^95) (243)
Americium
(^64) 157.25
Gadolinium
(^96) Curium(247)
65
Terbium158.9253
(^97) (247)
Berkelium
(^66) 162.50
Dysprosium
(^98) (251)
Californium
67
Holmium164.9303
(^99) (252)
Einsteinium
(^68) Erbium167.26 (^100) Fermium(257)
69
Thulium168.9342
(^101) (258)
Mendelevium
(^70) Ytterbium173.04 (^102) Nobelium(259)
71
Lutetium174.967^103 Lawrencium(260)
(^84) Polonium(209)
(^85) Astatine(210)
(^86) Radon(222)
1 2 3 4 5 6 7
Lanthanides
1A
2A
4A
3A
6A
8A
5A
7A
3B
4B
5B
Atomic numberSymbolAtomic weight
6B
7B
8B
1B
2B
Actinides
Elements 110 –112 have not yet been named.