- (C) In NH 4 Cl, the covalently bonded NH 4 + ion is ionically bonded to the Cl−
ion. In NH 4 NO 3 , the covalently bonded NH 4 + ion is ionically bonded to the
covalently bonded NO 3 − ion. Each of these polyatomic ions contains covalent
bonds within their structure where the electrons are shared equally.