Question

what is the electronic configuration of
G(z=24)​

Answer 1

Answer:

The electronic configuration of Cr (24) is 1s2, 2s2p6, 3s2p6d5,4s1. This is because an electronic configuration with half-filled and completely filled orbitals is more stable.

Answer 2

Answer:

1s2 2s2 2p6 3s2 3p6 3d5 4s1

or [Ar] 3d5 4s1

Half filled d orbital is more stable so electron jump from 4s2 to 3d5, This is an exception to Aufbau principle, folowed by Cu and Cr.