Origin of the elements, isotopes and atomic weights; chemical periodicity nd the periodic table; hydrogen; lithium, sodium, potassium, rubidium, caesium and francium; beryllium, magnesium, calcium, strontium, barium and radium; boron; aluminium, gallium, indium and thallium; carbon; silicon; germanium, tin and lead; nitrogren; phosphorous; arsenic, antimony and bismuth; oxygen; sulphur; selenium, tellerium and polonium; the halogens - fluorine, chlorine, bromine, iodine and astatine; the noble gases - helium, neon, argon, krypton, xenon and radon; co-ordination compounds; scandium, yttrium, lanthanum, and actinium; Titanium, zirconium and hafnium; vanadium, niobium and tantalum; chromium, molybdenum and tungsten; manganese, technetium and rhenium; iron, ruthenium and osmimum; cobalt, rhodium and iridium; nickel, palladium and platinum; copper, silver and gold; zinc, cadmium and mercury; the lanthanide elements; the actinide elements.