Group I III II IV V VI VII 0 1 4 H He Hydrogen Helium 2 1 7 9 11 12 14 16 19 20 Li Be B C N O F Ne Lithium Beryllium 3 Boron 4 5 Carbon 6 Nitrogen 7 Oxygen 8 Fluorine Neon 10 9 23 24 27 28 31 32 35.5 40 Na Mg Al Si P S Cl Ar Sodium Magnesium 11 Silicon Aluminium 12 14 13 Phosphorus Sulfur 16 15 Argon Chlorine 18 17 39 40 45 48 51 52 55 56 59 59 64 65 70 73 75 79 80 84 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Potassium 19 Calcium 20 Scandium Titanium 21 22 Vanadium 23 Chromium 24 85 88 89 91 93 96 Rb Sr Y Zr Nb Mo Rubidium 37 Strontium 38 Yttrium Zirconium 39 40 Niobium 41 Manganese 25 Molybdenum 42 Iron 26 Tc Technetium 43 Cobalt 27 Nickel 28 Copper 29 Zinc 30 Gallium 31 Germanium 32 Arsenic 33 Selenium 34 Bromine 35 Krypton 36 101 103 106 108 112 115 119 122 128 127 131 Ru Rh Pd Ag Cd In Sn Sb Te I Xe Ruthenium 44 Rhodium 45 Palladium 46 Silver 47 Cadmium 48 Tin Indium 50 49 Antimony 51 Tellurium 52 Xenon Iodine 54 53 133 137 139 178 181 184 186 190 192 195 197 201 204 207 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Caesium Barium Lanthanum Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon 55 56 57 * Fr Ra Ac Francium Radium Actinium 88 73 74 140 141 144 Ce Pr Nd Cerium Praseodymium 58 b 76 78 77 79 80 82 81 83 84 85 86 89 *58-71 Lanthanoid series 90-103 Actinoid series Key 75 227 226 87 72 209 a a = relative atomic mass X X = atomic symbol b = proton (atomic) number 59 Neodymium 60 232 Thorium Promethium 61 150 152 157 159 162 165 167 169 173 175 Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Samarium 62 Europium 63 Gadolinium 64 Terbium 65 Dysprosium 66 Holmium 67 Erbium 68 Thulium 69 Ytterbium 70 Lutetium 71 238 Th 90 Pm Pa U Protactinium 91 Uranium 92 Np Neptunium 93 Pu Plutonium 94 Am Cm Americium 95 Curium 96 Bk Berkelium 97 Cf Californium 98 Es Einsteinium 99 The volume of one mole of any gas is 24 dm3 at room temperature and pressure (r.t.p.). Fm Fermium 100 Md Mendelevium 101 No Nobelium 102 Lr Lawrencium 103 16 Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included the publisher will be pleased to make amends at the earliest possible opportunity. 0620/32/M/J/10 University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. © UCLES 2010 DATA SHEET The Periodic Table of the Elements