Origin of the elements, isotopes and atomic weights; chemical periodicity and 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; nitrogen; phosphorous; arsenic, antimony and bismuth; oxygen; sulphur; selenium, tellurium and polonium; the halogens - fluorine, chlorine, bromine, iodine and astatine; the noble gases - helium, neon, argon, krypton, xenon, and radon; coordination compounds; scandium, yttrium, lanthanum and actinum; titanium, zirconium and hafnium; vanadium, niobium, tantalum; chromium, molybdenum and tungsten; manganese, technetium and rhenium ; iron, ruthenium and osmium; cobalt, rhodium and iridium; nickel, palladium and platinum; copper, silver and gold; zinc, cadmium and mercury; the lanthanide elements; the actinide elements.