CoachA chemical family is a group of the periodic table whose elements share their main chemical properties. Three families are named: the alkali metals (group 1 except hydrogen: lithium, sodium, potassium…), soft metals that react strongly with water; the halogens (group 17: fluorine, chlorine, bromine, iodine), coloured, reactive non-metals; and the noble gases (group 18: helium, neon, argon…), which hardly react with anything.
