A
silver halide (or silver salt) is one of the
compounds which are formed between
silver and one of the
halogens –
silver bromide (AgBr),
chloride (AgCl),
iodide (AgI), and three forms of
silver fluoride. As a group, they are often referred to as the silver halides, and are often given the pseudo-chemical notation AgX. Although most silver halides involve silver atoms with
oxidation states of +1 (Ag
+), silver halides in which the silver atoms have oxidation states of +2 (Ag
2+) are known, of which
silver(II) fluoride is the only known stable one.