Define radical . Give some examples of bivalent negative radicals.

Explanation

A group of atoms possessing either positive or negative charge by losing or gaining one or more electrons is called a radical . The positively charged radicals are ammonium radicals `(NH_(4)^(+))` and hydroium radical `(H_(3)O^(+))`. All other radicals are negatively charged.
`SO_(3)^(-2),SO_(4)^(-2),CO_(3)^(-2)` are some examples of bivalent negative radicals.