Question

explain why anions larger than their parents atom​

Answer 1

Answer:

Anions are always larger than their parent atoms because the addition of 1 or more electrons would result in an increased repulsion among the electrons and a decrease in the effective nuclear charge. Thus increasing its size.

I HOPE IT HELP YOU..

Answer 2

Answer:

A gaseous atom gains one or more electrons to form anion. The nuclear charge remains same but the number of electrons increases. Same nuclear charge acts on greater number of electrons. The effective nuclear charge per electron decreases. The electrons are less strongly attracted and pulled away from the nucleus. Thus, the size increases.