1 Cations formed from metal atoms have the same name as the metal
2 If a metal can from cations with different charges, the positive charge is indicated by a roman numeral in parentheses following the name of the metal
3 cations formed from nonmetal atoms have names that end in "-ium"
1. The names of monatomic anions are formed by replacing the ending of the name of the element with "-ide"
2.Polyatomic anions containing oxygen have names ending in either "-ate" or "-ite"