H
He
Hydrogen Helium
1 2
0 2
1 4
Li Be B C N O F Ne
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
3 4 5 6 7 8 9 10
4 5 6 6 7 8 10 10
7 9 11 12 14 16 19 20
Na Mg Al Si P S Cl Ar
Sodium Magnesium Aluminium Silicon Phosphorus Sulphur Chlorine Argon
11 12 13 14 15 16 17 18
12 12 14 14 16 16 18 22
23 24 27 28 31 32 35 40
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
20 20 24 26 28 28 30 30 32 30 34 34 38 42 42 46 44 48
39 40 45 48 51 52 55 56 59 58 63 64 69 74 75 80 79 84
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
48 50 50 50 52 56 54 58 58 60 60 66 66 70 70 78 74 78
85 88 89 90 93 98 97 102 103 106 107 114 115 120 121 130 127 132
Cs Ba 57-71 Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Caesium Barium   Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon
55 56   72 73 74 75 76 77 78 79 80 81 82 83 84 85 86
78 82   108 108 110 112 116 116 117 118 122 124 126 126 125 125 136
133 138   180 181 184 187 192 193 195 197 202 205 208 209 209 210 222
Fr Ra 89-103 Rf Db Sg Bh Hs Mt Uun Uuu Uub Uut Uuq   Uuh   Uuo
Francium Radium   Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Ununnilium Unununium Ununbium Ununtrium Ununquadium   Ununhexium   Ununoctium
87 88   104 105 106 107 108 109 110 111 112 113 114 115 116 117 118
136 138   156 157 157 155 157 157                  
223 226   260 262 263 262 265 266                  
La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium
57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
82 82 82 82 84 90 90 94 94 98 98 0 100 104 104
139 140 141 142 145 152 153 158 159 164 165 68 169 174 175
Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium
89 90 91 92 93 94 95 96 97 98 99 100 101 102 103
138 142 140 146 144 150 148 151 150 153 155 157 157 153 153
227 232 231 238 237 244 243 247 247 251 254 257 258 255 256