Question

The electronic configuration of an element is 1s2 , 2s2 ,2p6 ,3s2 , 3p6 ,3d5 4s1. This represents its

(a) excited state

(b) ground state

(c) cationic form

(d) anionic form

Answer 1

Correct option (b) ground state

Explanation:

24Cr = 1s2, 2s2, 2p6, 3s2 , 3p6 , 3d5, 4s1

It is the ground state configuration of chromium which indicates the extra stability of the atom with half-filled d-orbitals.