Among the following series of transition metal ions, how many metals ions have d 2 electronic configuration F e 4 + , V 3 + , S n 2 + , A u 3 + T i 2 + , A s 3 + , C r 3 + , M n 5 + C o 3 + , Z r 2 + , C d 2 + , M o 4 + , L a 2 + , T a 4 +

Question

Among the following series of transition metal ions, how many metals ions have d 2 electronic configuration F e 4 + , V 3 + , S n 2 + , A u 3 + T i 2 + , A s 3 + , C r 3 + , M n 5 + C o 3 + , Z r 2 + , C d 2 + , M o 4 + , L a 2 + , T a 4 + , C o 6 + , N i 4 +

Quantrex Academy · Accepted Answer

Correct answer: 6

T i 22 = 3 d 2 4 s 2 ; T i 2 + = 3 d 2 V 23 = 3 d 3 4 s 2 ; V 3 + = 3 d 2 C r 24 = 3 d 5 4 s 1 ; C r 4 + = 3 d 2 M n 25 = 3 d 5 4 s 2 ; M n 5 + = 3 d 2 Z r 40 = 4 d 2 5 s 2 ; Z r 2 + = 4 d 2 M o 42 = 4 d 5 5 s 1 ; M o 4 + = 4 d 2

Among the following series of transition metal ions, how many metals ions have d 2 electronic configuration F e 4 + , V 3 + , S n 2 + , A u 3 + T i 2 + , A s 3 + , C r 3 + , M n 5 + C o 3 + , Z r 2 + , C d 2 + , M o 4 + , L a 2 + , T a 4 + , C o 6 + , N i 4 +

Correct answer

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