All 118 elements
Sorted by atomic number, color-coded by category. Click an element for the full reference page.
1 H Hydrogen 1.008 2 He Helium 4.003 3 Li Lithium 6.941 4 Be Beryllium 9.012 5 B Boron 10.810 6 C Carbon 12.011 7 N Nitrogen 14.007 8 O Oxygen 15.999 9 F Fluorine 18.998 10 Ne Neon 20.180 11 Na Sodium 22.990 12 Mg Magnesium 24.305 13 Al Aluminum 26.982 14 Si Silicon 28.086 15 P Phosphorus 30.974 16 S Sulfur 32.060 17 Cl Chlorine 35.450 18 Ar Argon 39.948 19 K Potassium 39.098 20 Ca Calcium 40.078 21 Sc Scandium 44.956 22 Ti Titanium 47.867 23 V Vanadium 50.942 24 Cr Chromium 51.996 25 Mn Manganese 54.938 26 Fe Iron 55.845 27 Co Cobalt 58.933 28 Ni Nickel 58.693 29 Cu Copper 63.546 30 Zn Zinc 65.380 31 Ga Gallium 69.723 32 Ge Germanium 72.630 33 As Arsenic 74.922 34 Se Selenium 78.971 35 Br Bromine 79.904 36 Kr Krypton 83.798 37 Rb Rubidium 85.468 38 Sr Strontium 87.620 39 Y Yttrium 88.906 40 Zr Zirconium 91.224 41 Nb Niobium 92.906 42 Mo Molybdenum 95.950 43 Tc Technetium 97.000 44 Ru Ruthenium 101.070 45 Rh Rhodium 102.910 46 Pd Palladium 106.420 47 Ag Silver 107.870 48 Cd Cadmium 112.410 49 In Indium 114.820 50 Sn Tin 118.710 51 Sb Antimony 121.760 52 Te Tellurium 127.600 53 I Iodine 126.900 54 Xe Xenon 131.290 55 Cs Cesium 132.910 56 Ba Barium 137.330 57 La Lanthanum 138.910 58 Ce Cerium 140.120 59 Pr Praseodymium 140.910 60 Nd Neodymium 144.240 61 Pm Promethium 145.000 62 Sm Samarium 150.360 63 Eu Europium 151.960 64 Gd Gadolinium 157.250 65 Tb Terbium 158.930 66 Dy Dysprosium 162.500 67 Ho Holmium 164.930 68 Er Erbium 167.260 69 Tm Thulium 168.930 70 Yb Ytterbium 173.050 71 Lu Lutetium 174.970 72 Hf Hafnium 178.490 73 Ta Tantalum 180.950 74 W Tungsten 183.840 75 Re Rhenium 186.210 76 Os Osmium 190.230 77 Ir Iridium 192.220 78 Pt Platinum 195.080 79 Au Gold 196.970 80 Hg Mercury 200.590 81 Tl Thallium 204.380 82 Pb Lead 207.200 83 Bi Bismuth 208.980 84 Po Polonium 209.000 85 At Astatine 210.000 86 Rn Radon 222.000 87 Fr Francium 223.000 88 Ra Radium 226.000 89 Ac Actinium 227.000 90 Th Thorium 232.040 91 Pa Protactinium 231.040 92 U Uranium 238.030 93 Np Neptunium 237.000 94 Pu Plutonium 244.000 95 Am Americium 243.000 96 Cm Curium 247.000 97 Bk Berkelium 247.000 98 Cf Californium 251.000 99 Es Einsteinium 252.000 100 Fm Fermium 257.000 101 Md Mendelevium 258.000 102 No Nobelium 259.000 103 Lr Lawrencium 266.000 104 Rf Rutherfordium 267.000 105 Db Dubnium 268.000 106 Sg Seaborgium 269.000 107 Bh Bohrium 270.000 108 Hs Hassium 277.000 109 Mt Meitnerium 278.000 110 Ds Darmstadtium 281.000 111 Rg Roentgenium 282.000 112 Cn Copernicium 285.000 113 Nh Nihonium 286.000 114 Fl Flerovium 289.000 115 Mc Moscovium 290.000 116 Lv Livermorium 293.000 117 Ts Tennessine 294.000 118 Og Oganesson 294.000