Question

Arrange in order of increasing electron affinity P, Na, Ar

Answer 1

Answer:

Correct order of electron affinity is :

Ar < Na <P

Since, Ar has greater size as compared to P & Na which have smaller, so electron affinity will be larger for small size atom.

As Na has less protons as compared to P, hence Na has less attraction to other atoms. Therefore, Na has less electron affinity than P.