0 2 IIA IIIA IVA VA VIA VIIA He 5 6 7 8 g 10 Be B C N F Ne 11 12 13 14 15 16 17 18 3 Na Mg IlIB IVB VB VIB VIIB VIIB 1B IIB Si P S CI Ar 19 20 21 22 23 24 25 26 27 28 29 30 3T■ 32 33 34 35 36 K Ca Sc i Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 37 38 39 40 41 2 43 44 45 46 47 48 49 50 51 2 53 54 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Xe 56 57 72 73 74 75 76 77 78 79 80 81 83 84 85 86 6 Cs Ba *La Hf Ta W Re Os Ir Pt Au Hg T Pb Bi At Rn 87 88 89 104 105 106 107 108 109 110 111 112 114 116 118 Ra +Ac 104 105 106 107 108 109 110 111 112 114 116 118 "Lanthanide 58 59 60 61 62 63 64 65 66 67 68 69 70 71 Series Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu +Actinide 91 92 93 94 95 96 97 98 gg 100 101T 102 103 Series Th Pa Np Pu Am Cm Bk C Es Fm Md No Lr