Question

Select CORRECT order of electron affinity.
(A) O>S>P> Ca (B) S>O>P>Ca
(C) O>s > Ca>P (D)O>P>S>Ca​

Answer 1

Answer:

A)O>S>P>Ca

Explanation:

Electron affinity decreases down a group and increases across a period.

Answer 2

Answer:

O>S > Ca>P.

Explanation:

The electron affinity is the amount of energy which is given out or stored when an electron is added to the neutral atom to make that atom negatively charged. The electron affinity decreases down a group and increases across a period.

Since, oxygen is the most electro-negetive among all these, it will have the higher electron affinity then sulphur then calcium and at last phosphorus.