What is the electronic cofiguration of charomium atom (z= 24) Give reason for your answer.

Explanation

Electronic configuration of Cr atom is :
`1s^2, 2s^2p^6, 3s^2 p^6 d^5, 4s^1` This is because an electronic configuration with half-filled and completely filled orbitals is more stable. `""_24Cr` has 3d orbitals half-filled which is more stable configuration than normally expec ted i.e., `3d^4 4s^2`.