From the below; which of the following pairs is like to be paramagnetic?

I. H = 1s¹ 

II. N = 1s² 2s² p³ 

III. O = 1s² 2s² p⁴ 

IV. Zn = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

A. I and II
B. I and III
C. I and IV
D. III and IV

Correct Answer:

Option A – I and II