Which of the following elements is expected to have highest electron affinity ?

Options

A. `1s^(2)2s^(2)2p^(6) 3s^(2)3p^(5)`
B. `1s^(2)2s^(2)2p^(3)`
C. `1s^(2)2s^(2)2p^(4)`
D. `1s^(2)2s^(2)2p^(5)`

Answer

A

Explanation

It represents halogen Cl. The E.A. of Cl is highest amongst halogens.