Question

The electronic configuration of four elements is given below. Arrange these elements in the correct
order of the magnitude( without sign) of their electron affinity.
1) 28 29
ii) 3s 3p
ii) 28-2p
iv) 35-3p
​

Answer 1

Answer:

(iii) < (iv) < (i) < (ii)

Explanation:

On the basis of the electronic configuration the corresponding elements are-

i) F ii) Cl iii) O iv) S

Cl has the highest EA. F should have the highest EA but its size can't accommodate the incoming electron easily because of its small size.

So, F will come second in order. Then, sulfur will come and then oxygen because of the same size reason.