AIPMT PRELIMS2010Chemistry-Electronic Configuration

AIPMT PRELIMS 2010 Chemistry Transition Elements MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Which one of the following ions has electronic configuration [Ar]₃d⁶?

A

Co³⁺

B

Ni³⁺

C

Mn³⁺

D

Fe³⁺

Correct Answer

Option A

Detailed Explanation

Co = [Ar]₃d⁷4s²

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