h1'Clrogen Avogadro's number = 6.02 x 1 H 1.0079 lithium -helium 1023 2 beryllium boron carton nitrOJen oxygen Li Be 10.811 B 12.011 C 14.007 N 15.999 13 14 15 16 3 6.941 sodium 11 5 4 9.0122 magnes1um aluminium 12 Na Mg 22.990 potassium 19 24.305 calcium scandium 21 20 K Ca 39.098 rubidium 37 85.468 55 44.956 yttrium 39 38 87.62 barium 56 Cs Ba 132.91 francium 137.33 radium 12231 12261 22 Sc Ti 40.078 strontium Rb Sr caesium titanium y 88.906 lutetium 47.867 zirconium 40 vanadium 23 V 50.942 niobium 41 chromium 24 manganese 25 iron 26 cobalt 27 ni ckel 28 copper 29 zinc 30 Al 26.982 gallium 31 88 silicon Si 28.086 germanium 32 7 phosphorus p 30.974 arsenic 33 8 0 sulfur s 32.065 selenium 34 51.996 54.938 molybdenum technetium 55.845 ruthenium 44 58.933 rhoclium 45 58.693 palladium 46 63.546 si lver 47 65.39 cadmium 48 69.723 indium 72.61 tin 74.922 antimony 78.96 tellurium 4.0026 neon 10 18.998 F Ne 17 18 chlorine 20.180 argon Cl Ar 35.453 bromine 35 79.904 39.948 krypton 36 xenon I Xe 50 112.41 mercury 114.82 thallium 118.71 lead 121.76 bismuth 127.60 polonium astatine 196.97 unununium 200.59 ununbium 204.38 207.2 208.98 12091 1210! thulium ytterbium 43 92.906 tantalum 95.94 tungsten 1981 rhenium 101.07 osmium 102.91 iridium 106.42 platinum 107.87 gold 180.95 dubnium 183.84 seaborgium 186.21 bohrium 190.23 hassium 192.22 meitnerium 195.08 ununnllium 51 52 83.80 iodine 49 42 Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te 91.224 hafnium 9 He Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 53 126.90 54 131.29 radon * Lu Hf Ta w Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 57-70 71 72 178.49 174.97 lawrencium rutherfordium 73 74 75 76 77 78 79 80 81 Fr Ra ** Lr Rf Db Sg Bh Hs Mt Uun Uuu Uub 87 6 fluori ne 89-102 * Lanthanide series **Actinide series 103 104 12621 12611 12621 12661 12641 12691 12681 12711 12721 12771 lanthanum cerium praseodymiurr neodymium promethium samarium europium gadolinium terbium dysprosium 57 58 105 59 106 60 107 61 108 62 109 63 110 64 111 65 112 66 82 ununquadium 83 84 114 Uuq 12891 holmium 67 erbium 68 69 70 La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb 138.91 actinium 89 140.12 thorium 90 140.91 protactinium 91 Ac Th Pa 12271 232.04 231.04 144.24 uranium u 92 238.03 11451 neptunium 93 150.36 plutonium 94 151.96 americium 95 157.25 curium 96 158.93 berkelium 97 162.50 californium 98 164.93 einsteinium 99 167.26 fermium 100 168.93 mendelevium 101 173.04 nobelium 102 Np Pu Am Cm Bk Cf Es Fm Md No 12371 12441 12431 12471 12471 12511 12521 12571 12581 12591 85 86 12221