List of elements by atomic number Z 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
Name Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver
Sym Period Group Chemical series H 1 1 Nonmetal He 1 18 Noble gas Li 2 1 Alkali metal Be 2 2 Alkaline earth metal B 2 13 Metalloid C 2 14 Nonmetal N 2 15 Nonmetal O 2 16 Nonmetal F 2 17 Halogen Ne 2 18 Noble gas Na 3 1 Alkali metal Mg 3 2 Alkaline earth metal Al 3 13 Poor metal Si 3 14 Metalloid P 3 15 Nonmetal S 3 16 Nonmetal Cl 3 17 Halogen Ar 3 18 Noble gas K 4 1 Alkali metal Ca 4 2 Alkaline earth metal Sc 4 3 Transition metal Ti 4 4 Transition metal V 4 5 Transition metal Cr 4 6 Transition metal Mn 4 7 Transition metal Fe 4 8 Transition metal Co 4 9 Transition metal Ni 4 10 Transition metal Cu 4 11 Transition metal Zn 4 12 Transition metal Ga 4 13 Poor metal Ge 4 14 Metalloid As 4 15 Metalloid Se 4 16 Nonmetal Br 4 17 Halogen Kr 4 18 Noble gas Rb 5 1 Alkali metal Sr 5 2 Alkaline earth metal Y 5 3 Transition metal Zr 5 4 Transition metal Nb 5 5 Transition metal Mo 5 6 Transition metal Tc 5 7 Transition metal Ru 5 8 Transition metal Rh 5 9 Transition metal Pd 5 10 Transition metal Ag 5 11 Transition metal
Mass (g/mol) 1.00794(7)[1][2][3] 4.002602(2)[1][3] 6.941(2)[1][2][3][4] 9.012182(3) 10.811(7)[1][2][3] 12.0107(8)[1][3] 14.0067(2)[1][3] 15.9994(3)[1][3] 18.9984032(5) 20.1797(6)[1][2] 22.98976928(2) 24.3050(6) 26.9815386(8) 28.0855(3)[3] 30.973762(2) 32.065(5)[1][3] 35.453(2)[1][2][3] 39.948(1)[1][3] 39.0983(1) 40.078(4)[1] 44.955912(6) 47.867(1) 50.9415(1) 51.9961(6) 54.938045(5) 55.845(2) 58.933195(5) 58.6934(4) 63.546(3)[3] 65.38(2) 69.723(1) 72.64(1) 74.92160(2) 78.96(3)[3] 79.904(1) 83.798(2)[1][2] 85.4678(3)[1] 87.62(1)[1][3] 88.90585(2) 91.224(2)[1] 92.90638(2) 95.96(2)[1] [98.9063][5] 101.07(2)[1] 102.90550(2) 106.42(1)[1] 107.8682(2)[1]
48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97
Cadmium Cd Indium In Tin Sn Antimony Sb Tellurium Te Iodine I Xenon Xe Caesium Cs Barium Ba Lanthanum La Cerium Ce Praseodymium Pr Neodymium Nd Promethium Pm Samarium Sm Europium Eu Gadolinium Gd Terbium Tb Dysprosium Dy Holmium Ho Erbium Er Thulium Tm Ytterbium Yb Lutetium Lu Hafnium Hf Tantalum Ta Tungsten W Rhenium Re Osmium Os Iridium Ir Platinum Pt Gold Au Mercury Hg Thallium Tl Lead Pb Bismuth Bi Polonium Po Astatine At Radon Rn Francium Fr Radium Ra Actinium Ac Thorium Th Protactinium Pa Uranium U Neptunium Np Plutonium Pu Americium Am Curium Cm Berkelium Bk
5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 7 7 7 7 7 7 7 7 7 7 7
12 13 14 15 16 17 18 1 2
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2
Transition metal Poor metal Poor metal Metalloid Metalloid Halogen Noble gas Alkali metal Alkaline earth metal Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Lanthanoid Transition metal Transition metal Transition metal Transition metal Transition metal Transition metal Transition metal Transition metal Transition metal Poor metal Poor metal Poor metal Metalloid Halogen Noble gas Alkali metal Alkaline earth metal Actinoid Actinoid Actinoid Actinoid Actinoid Actinoid Actinoid Actinoid Actinoid
112.411(8)[1] 114.818(3) 118.710(7)[1] 121.760(1)[1] 127.60(3)[1] 126.90447(3) 131.293(6)[1][2] 132.9054519(2) 137.327(7) 138.90547(7)[1] 140.116(1)[1] 140.90765(2) 144.242(3)[1] [146.9151][5] 150.36(2)[1] 151.964(1)[1] 157.25(3)[1] 158.92535(2) 162.500(1)[1] 164.93032(2) 167.259(3)[1] 168.93421(2) 173.054(5)[1] 174.9668(1)[1] 178.49(2) 180.9479(1) 183.84(1) 186.207(1) 190.23(3)[1] 192.217(3) 195.084(9) 196.966569(4) 200.59(2) 204.3833(2) 207.2(1)[1][3] 208.98040(1) [208.9824][5] [209.9871][5] [222.0176][5] [223.0197][5] [226.0254][5] [227.0278][5] 232.03806(2)[1][5] 231.03588(2)[5] 238.02891(3)[1][2][5] [237.0482][5] [244.0642][5] [243.0614][5] [247.0704][5] [247.0703][5]
98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118
Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Ununbium Ununtrium Ununquadium Ununpentium Ununhexium Ununseptium Ununoctium
Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Uub Uut Uuq Uup Uuh Uus Uuo
7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Actinoid Actinoid Actinoid Actinoid Actinoid Actinoid Transition metal Transition metal Transition metal Transition metal Transition metal Transition metal Transition metal Transition metal Transition metal Poor metal Poor metal Poor metal Poor metal Halogen Noble gas
Metals Alkali metals
Alkaline earth metals
Inner transition elements Lanthanoids Actinoids
[251.0796][5] [252.0829][5] [257.0951][5] [258.0986][5] [259.1009][5] [264][5] [265][5] [268][5] [272][5] [273][5] [276][5] [279][5] [278][5] [283][5] [285][5] [287][5] [289][5] [291][5] [293][5] [295] [6] [294][5] Nonmetals
Transition elements
Other Metalloids Other metals nonmetals
Halogen s
Noble Unknown gases