Naming covalent compounds. The more positive element is named first. The more negative element is named as if it was an anion. C. Prefixes are used to denote the number of each of the elements involved. If the acid contains an oxygen, determine the name of the polyatomic anion.
Sulfic acid sounds bad, so use sulfur as the root instead.
However, the suffix is still determined using the name of the polyatomic anion. The anion may or may not be polyatomic. For our purposes, if a compound contains more than two elements the compound most likely contains a polyatomic ion. All the cations made from Group 1 and 2 elements can only have a single charge. All compounds will be neutral so the charge of the cations must equal the charge of the anions.