Symbol Name Atomic number

☢
↑ Radioactive Atomic mass
Alkali metals
Alkali earth metals
Lanthanoids
Actinoids
Transition metals
Post-transition metals
Metalloids
Other
nonmetals
Noble gases
Unknown
Gas
Liquid
Solid
Un-known

273 K

0ºC

31.4ºF

H Hydrogen 1 1.008

Li Lithium 3 6.940

Na Sodium 11 22.989

K Potassium 19 39.098

Rb Rubidium 37 85.468

Cs Caesium 55 132.905

Fr Francium 87
☢ (223.000)

Be Berilyum 4 9.012

Mg Magne-sium 12 24.305

Ca Calcium 20 40.078

Sr Strontium 38 87.620

Ba Barium 56 137.327

Ra Radium 88
☢ (226.000)

Sc Scandium 21 44.956

Y Yttrium 39 88.906

57-71 Lantha-noids
89-103

☢ Actinoids
Ti Titanium 22 47.867

Zr Zirconium 40 91.224

Hf Hafnium 72 178.490

Rf Ruther-fordium 104
☢ (267.000)

V Vanadium 23 50.942

Nb Niobium 41 92.906

Ta Tantalum 72 180.947

Db Dubnium 105
☢ (268.000)

Cr Chro-mium 24 51.996

Mo Molyb-denum 42 95.950

W Tungsten 73 183.840

Sg Seabor-gium 106
☢ (268.000)

Mn Manga-nese 25 54.938

Tc Techne-tium 43
☢ (98.000)

Re Rhenium 74 186.207

Bh Bohrium 107
☢ (270.000)

Fe Iron 26 55.845

Ru Ruthe-nium 44 101.070

Os Osmium 75 190.230

Hs Hassium 108
☢ (277.000)

Co Cobalt 27 58.993

Rh Rhodium 45 102.905

Ir Iridium 76 192.217

Mt Meitne-rium 109
☢ (278.000)

Ni Nickel 28 58.963

Pd Palladium 46 106.420

Pt Platinum 77 195.084

Ds Darmstad-tium 110
☢ (281.000)

Cu Copper 29 63.546

Ag Silver 47 107.868

Au Gold 78 107.868

Rg Roentge-nium 111
☢ (282.000)

Zn Zinc 30 65.380

Cd Cadmium 48 112.414

Hg Mercury 79 200.592

Cn Coperni-cium 112
☢ (285.000)

B Boron 5 10.810

Al Alumi-nium 13 26.982

Ga Gallium 31 69.723

In Indium 49 114.818

Tl Thallium 81 204.380

Nh Nihonium 113
☢ (286.000)

C Carbon 6 12.001

Si Silicon 14 28.085

Ge Germa-nium 32 72.630

Sn Tin 50 118.710

Pb Lead 82 207.200

Fl Flerovium 114
☢ (289.000)

N Nitrogen 7 14.007

P Phospho-rus 15 30.974

As Arsenic 33 74.922

Sb Antimony 51 121.760

Bi Bismuth 83
☢ 208.980

Mc Mosco-vium 115
☢ (290.000)

O Oxygen 8 15.999

S Sulfur 16 32.060

Se Selenium 34 78.971

Te Tellurium 52 127.600

Po Polonium 84
☢ (209.000)

Lv Livemo-rium 116
☢ (293.000)

F Fluorine 9 18.998

Cl Chlorine 17 35.450

Br Bromine 35 79.904

I Iodine 53 126.904

At Astatine 85
☢ (210.000)

Ts Tennes-sine 117
☢ (294.000)

He Helium 2 4.002

Ne Neon 10 20.180

Ar Argon 18 39.948

Kr Krypton 36 83.798

Xe Xenon 54 131.293

Rn Radon 86
☢ (222.000)

Og Oganes-son 118
☢ (294.000)

La Lantha-num 57 138.905

Ce Cerium 58 140.116

Pr Praseod-ymium 59 140.907

Nd Neod-ymium 60 144.242

Pm Prome-thium 61
☢ (145.000)

Sm Samarium 62 150.360

Eu Europium 63 151.964

Gd Gadoli-nium 64 157.250

Tb Terbium 65 157.250

Dy Dyspro-sium 66 162.500

Ho Holmium 67 164.930

Er Erbium 68 167.259

Tm Thulium 69 168.934

Y Ytterbium 70 173.045

Lu Lutetium 71 174.967

Ac Actinium 89
☢ (227.000)

Th Thorium 90
☢ 232.038

Pa Protacti-nium 91
☢ 231.035

U Uranium 92
☢ 238.028

Np Neptu-nium 93
☢ (237.000)

Pu Pluto-nium 94
☢ (244.000)

Am Ameri-cium 95
☢ (243.000)

Cm Curium 96
☢ (247.000)

Bk Berkelium 97
☢ (247.000)

Cf Califor-nium 98
☢ (251.000)

Es Einstei-nium 99
☢ (252.000)

Fm Fermium 100
☢ (257.000)

Md Mendele-vium 101
☢ (258.000)

No Nobelium 102
☢ (259.000)

Lr Lawren-cium 103
☢ (266.000)