The correct ground state electronic configuration of chromium atom is Options: A . &nbsp [ A r ] 3 d 5 4 s 1 B . &nbsp [ A r ] 3 d 4 s 2 C . &nbsp [ A R ] 3 d 6 4 s 0 D . &nbsp [ A r ] 4 d 5 4 s 1

The correct ground state electronic configuration of chromium atom is

Discussion Forum : Atomic Structure

Question -

The correct ground state electronic configuration of chromium atom is

Options:

A .

[A r] 3 d^{5} 4 s^{1}

B .

[A r] 3 d^{4} s^{2}

C .

[A R] 3 d^{6} 4 s^{0}

D .

[A r] 4 d^{5} 4 s^{1}

Answer: Option A
:
A

3d subshell filled with 5 electrons (half-filled) is more stable than that filled with 4 electrons. 1, 4s electrons jumps into 3d subshell for more sability.

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