Question

Which of the following electronic configurations would be associated with the highest magnetic moment?

• A. $[Ar] 3d^7$
• B. $[Ar] 3d^8$
• C. $[Ar] 3d^2$
• D. $[Ar] 3d^6$

Answer 1

Answer: (D)

$[Ar] 3d^6$

Answer 2

The magnetic moment μ is given by:

μ=$\sqrt{n(n + 2)}$ BM

where n is the number of unpaired electrons. Among the options, [Ar] 3d6 has the highest number of unpaired electrons (4), leading to a maximum magnetic moment.