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Thanks to Doc Brown of ChemHelp.Net for these great chemistry revision notes. Check out his site for more! Selected Elements of The Periodic Table (name, symbol and atomic numbers 1-38 &
53-54) 1 2 G R O U P 3 4 5 6 7 8 or 0 Alkali Metals The Halogens Noble Gases Period 1 H 1 Helium 2, He 2 Lithium 3, Li Be 4 B 5 C 6 N 7 O 8 Fluorine 9, F Neon 10, Ne 3 Sodium 11, Na Mg 12 T ? R ? A M N E S T I A T L I S O ? N ? Al 13 Si 14 P 15 S 16 Chlorine 17, Cl Argon 18, Ar 4 Potassium 19, K Ca 20 Sc 21 Ti 22 V 23 Cr 24 Mn 25 Fe 26 Co 27 Ni 28 Cu 29 Zn 30 Ga 31 Ge 32 As 33 Se 34 Bromine 35, Br Krypton 36, Kr 5 Rubidium 37, Rb Sr 38 Iodine 53, I Xenon 54, Xe