Among the following series of transition metal ions, the one where all metal ions have 3d 5 electronic configuration is (At. No. Mn = 25, Fe = 26, Co = 27)

Correct Answer is : Mn2+, Fe3+, Co4+

TN TET 2013 Paper 2 Math and Science Paper

Question : 114 of 150

Marks: +1, -0

Among the following series of transition metal ions, the one where all metal ions have 3d⁵ electronic configuration is
(At. No. Mn = 25, Fe = 26, Co = 27)

Mn³⁺, Fe²⁺, Co³⁺
Mn²⁺, Fe³⁺, Co⁴⁺
Mn⁺, Fe²⁺, Co²⁺
Mn³⁺, Fe⁴⁺, Co⁺

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