HOMOLOGY n.
erm is applied to the relation between chemical elements of the same group; as, chlorine, bromine, and iodine are said to be in homology with each other. Cf. Heterology. General homology (Biol.), the higher relation which a series of parts, or a single part, bears to the fundamental or general type on which the group i…
HYDROBROMIC a.
Composed of hydrogen and bromine; as, hydrobromic acid. Hydrobromic acid (Chem.), a colorless, pungent, corrosive gas, HBr, usually collected as a solution in water. It resembles hydrochloric acid, but is weaker and less stable. Called also hydrogen bromide.
METALLOID n.
operties; a nonmetal; as, boron, carbon, phosphorus, nitrogen, oxygen, sulphur, chlorine, bromine, etc., are metalloids.