1 1 1 H Väte 3 2 18 1 He Helium 3 3 1 2 Li Litium 1 4 2 2 Be Beryllium 1 5 13 2 B Bor 1 6 14 2 C Kol 1 7 15 2 N Kväve 3 8 16 2 O Syre 3 9 17 2 F Fluor 3 10 18 2 Ne Neon 3 11 1 3 Na Natrium 1 12 2 3 Mg Magnesium 1 13 13 3 Al Aluminium 1 14 14 3 Si Kisel 1 15 15 3 P Fosfor 1 16 16 3 S Svavel 1 17 17 3 Cl Klor 3 18 18 3 Ar Argon 3 19 1 4 K Kalium 1 20 2 4 Ca Kalcium 1 21 3 4 Sc Skandium 1 22 4 4 Ti Titan 1 23 5 4 V Vanadin 1 24 6 4 Cr Krom 1 25 7 4 Mn Magnesium 1 26 8 4 Fe Järn 1 27 9 4 Co Kobolt 1 28 10 4 Ni Nickel 1 29 11 4 Cu Koppar 1 30 12 4 Zn Zink 1 31 13 4 Ga Gallium 2 32 14 4 Ge Germanium 1 33 15 4 As Arsenik 1 34 16 4 Se Selen 1 35 17 4 Br Brom 2 36 18 4 Kr Krypton 3 37 1 5 Rb Rubidium 1 38 2 5 Sr Strontium 1 39 3 5 Y Yttrium 1 40 4 5 Zr Zirkonium 1 41 5 5 Nb Niob 1 42 6 5 Mo Molybden 1 43 7 5 Tc Teknetium 4 44 8 5 Ru Rutenium 1 45 9 5 Rh Rodium 1 46 10 5 Pd Palladium 1 47 11 5 Ag Silver 1 48 12 5 Cd Kadmium 1 49 13 5 In Indium 1 50 14 5 Sn Tenn 1 51 15 5 Sb Antimon 1 52 16 5 Te Tellur 1 53 17 5 I Jod 1 54 18 5 Xe Xenon 3 55 1 6 Cs Cesium 2 56 2 6 Ba Barium 1 57 3 6 La Lanthan 1 72 4 6 Hf Hafnium 1 73 5 6 Ta Tantal 1 74 6 6 W Volfram 1 75 7 6 Re Rhenium 1 76 8 6 Os Osmium 1 77 9 6 Ir Iridium 1 78 10 6 Pt Platina 1 79 11 6 Au Guld 1 80 12 6 Hg Kvicksilver 2 81 13 6 Tl Tallium 1 82 14 6 Pb Bly 1 83 15 6 Bi Vismut 1 84 16 6 Po Polonium 1 85 17 6 At Astat 1 86 18 6 Rn Radon 3 87 1 7 Fr Francium 2 88 2 7 Ra Radium 1 89 3 7 Ac Aktinium 1 104 4 7 Unq Unnilquadium 4 105 5 7 Unp Unnilpentium 4 106 6 7 Unh Unnilhexium 4 58 4 8 Ce Cerium 1 59 5 8 Pr Praseodym 1 60 6 8 Nd Neodym 1 61 7 8 Pm Prometium 4 62 8 8 Sm Samarium 1 63 9 8 Eu Europium 1 64 10 8 Gd Gadolinium 1 65 11 8 Tb Terbium 1 66 12 8 Dy Dysprosium 1 67 13 8 Ho Holmium 1 68 14 8 Er Erbium 1 69 15 8 Tm Tulium 1 70 16 8 Yb Ytterbium 1 71 17 8 Lu Lutetium 1 90 4 9 Th Torium 1 91 5 9 Pa Protaktinium 1 92 6 9 U Uran 1 93 7 9 Np Neptunium 4 94 8 9 Pu Plutonium 4 95 9 9 Am Americium 4 96 10 9 Cm Curium 4 97 11 9 Bk Berkelium 4 98 12 9 Cf Californium 4 99 13 9 Es Einsteinium 4 100 14 9 Fm Fermium 4 101 15 9 Md Mendelevium 4 102 16 9 No Nobelium 4 103 17 9 Lr Lawrencium 4