MHT CET 2023 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties MHT CET 2023

Find the number of unpaired electrons for copper in ground state configuration

(A)1Correct
(B)2
(C)3
(D)4

Answer: (A)

Solution

Copper has atomic number 29. Because a completely filled -subshell is extra stable, the ground state configuration is the exception and not . The subshell is full (all 10 electrons paired) and the

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Question ID VK-098157