...in one molecule. But when the interchange occurs, these become respectively united with three (NO3) groups, each of which is univalent, and incapable...monad or two diad atoms with one tetrad, and so forth. AgN03 NaN03 AgN03 . Ag) AgfPO* Ag) + NaNO3 AgNO3 "hree molecules. One molecule Two molecules c of silver...