MHT CET 2022 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties MHT CET 2022

What is total number of unpaired electrons present in observed electronic configuration of Cr (Z = 24) ?

(A)4
(B)5
(C)6Correct
(D)3

Answer: (C)

Solution

The observed configuration of chromium is , not , because a half-filled d subshell (together with a half-filled 4s) gives extra exchange energy and stability. All five 3d orbitals each have one

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Question ID VK-095922