Definition of acid and basic radicals.

• The anions which are negatively charged are called acidic radicals.
• Some of the examples of acidic radicals are $S{O}_4^{2-}$ , $N{O}_3^{-}$ etc.​
• The cations which are positively charged are called basic radicals.
• Some of the examples of basic radicals are ${Na}^{+}$, ${Fe}^{2+}$ etc.