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What is the electronic configuration of the chromium atom (Z = 24)? Give a reason for your answer.

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Electronic configuration of Cr atom is 1s2 , 2s22p6 , 3s2p6d5 , 4s1 This is because in this electronic configuration d subshell is half-filled which is more stable configuration than normally expected i.e., 3d44s2 .

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