Problem: An atom Fe has two 4s electrons and six 3d electrons. How many unpaired electrons would there be in Fe2+ ion? (A) one (B) two (C) three (D) four

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An atom Fe has two 4s electrons and six 3d electrons. How many unpaired electrons would there be in Fe2+ ion?

(A) one

(B) two

(C) three

(D) four

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