D-And F-Block Elements Ques 312

Question: The number of unpaired electrons in cobalt atom is (atomic number of Co = 27)

[MP PMT 2003]

Options:

A) 2

B) 3

C) 4

D) 1

Show Answer

Answer:

Correct Answer: B

Solution:

Electronic configuration of 27Co - 1s22s22p63s23p63d74s2 , hence unpaired e = 3



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