Question

An element in period 3 whose electron affinity is zero

Answer 1

Argon and magnesium have electron affinity as zero

Answer 2

Hello dear,

● Answer -
Argon (Ar) has zero electron affinity.

● Explanation -
- Electron affinity of an element predicts the likelihood of a neutral atom to gain electrons.
- As noble gases have stable electronic configuration (due to completely filled orbitals), they are less likely to participate in the reaction.
- Argon is a noble gas from period 3, hence it would have zero electron affinity.

Thanks for asking..