Question

why parent radii always smaller than anion ?​

Answer 1

Answer:

The ionic radius of a cation is always smaller than the parent atom because the loss of one or more electrons increases the effective nuclear charge. ... In contrast, the ionic radius of an anion is always larger than its parent atom because the addition of one or more electrons decreases the effective nuclear charge.

Answer 2

The ionic radius of a cation is always smaller than the parent atom because the loss of one or more electrons increases the effective nuclear charge. ... In contrast, the ionic radius of an anion is always larger than its parent atom because the addition of one or more electrons decreases the effective nuclear charge.