noun which may take the genitive case particle 'no'
divalent
Chemistry term describing an atom or group with a valence of two; used attributively with の.
二価の陽イオンは、溶液中で二つの電子を失っている。
A divalent cation has lost two electrons in solution.
Monovalent; having a valence of one.
Trivalent; having a valence of three.
Compound of 二 (two) and 価 (valence), a straightforward kanji-based technical term.