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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