Chemical formula comes from chemical name {formula from name}. Because molecule has zero total charge, sum of ion charges and atom valences must equal zero. First, write atom or complex-ion symbols in same sequence as in name. Remember or look up ion or atom charges or valence. For atoms or complex ions, assign number subscripts so sum, of charge or valence times subscript, adds to zero.
Physical Sciences>Chemistry>Inorganic>Chemical>Naming
5-Chemistry-Inorganic-Chemical-Naming
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224