Iode

The general family resemblance between certain groups of bodies, now regarded as elementary, (as…for instance, chloride, iode, and brome).

Source: wiktionary

All the metals unite with iodine, and form compounds which have been called iodes, iodures, or iodides. The last term is to be preferred, on account of the analogy of the compounds denoted by it with oxides and chlorides.

Source: wiktionary