The number of unpaired electrons in Fe+2, Fe+3, Ni+2 are respectively

1.	The number of unpaired electrons in Fe⁺², Fe⁺³, Ni⁺² are respectively
A.	4,5,5
B.	4,5,2
C.	5,2,4
D.	5,4,2
Answer» C. 5,2,4

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