Describe the theory associated with the radius of an atom as it
a. gains an electron
b. loses an electron

Explanation

(a) When an atom gains one electron to form an anion, its radius increases. The anions are always larger in size than the corresponding atoms. For reasons: Refer answer to
(b) When an atom loses an electron, it forms acation and its radius decreases. The cations are always smaller in size than the corresponding atoms. For reason : Refer answer to