Silver halide Silver halide A silver halide (or silver salt) is one of the chemical compounds that can form between the element silver and one of the halogens. In particular, bromine, chlorine, iodine and fluorine may each combine with silver to produce silver bromide (AgBr), silver chloride (AgCl), silver iodide (AgI), and three forms of silver fluoride, respectively. 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
The Silver Branch (Sutcliff novel) himself Carausius's hound and who wears a dog's tail as part of his motley. Subtle allusions to the silver branch recur in other novels in the Eagle of the Ninth series, and it presumably refers to the otherworldly musical instrument mentioned in the medieval Irish narrative The Voyage of Bran. The Silver Branch was also a symbol of authority and a temporary "pass card" used by the Celts, consisting of a sprig of mistletoe or an apple branch. "The Silver Branch" is #2 in the Roman Britain Series, following "The Eagle of the Ninth" (1954) and preceding "Frontier Wolf" (1980),