The ground state electronic configuration for chromium atom (Z = 24) is …………

(A) [Ar] 3d54s1 

(B) [Ar] 3d44s1 

(C) [Ar] 3d8

(D) [Ar] 4s14p5

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2 Answers

Correct Option is : (A) [Ar] \(3d^54s^1\)

Tge ground state electronic configuration of Cr is \(1s^2 \ 2s^2 \ 2p^6\)  \(3s^2 \ 3p^6 \ 4s^1 \ 3d^5\)

or [Ar] \(3d^54s^1\)

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Option : (A) [Ar] 3d54s1

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