Which of the following ions has the maximum magnetic moment?

Question

Question

This question was previously asked in

AIIMS BSc NURSING 2024 Memory-Based Paper

Answer 1

CONCEPT:

Magnetic Moment

The magnetic moment of an ion is related to the number of unpaired electrons present in the ion.
It can be calculated using the formula:
μ = √(n(n+2)) BM
Where μ is the magnetic moment and n is the number of unpaired electrons.

EXPLANATION:

Ion	Electronic Configuration	Number of Unpaired Electrons	Magnetic Moment (BM)
Mn²⁺	[Ar] 3d⁵	5	√35
Fe²⁺	[Ar] 3d⁶	4	√24
Ti²⁺	[Ar] 3d²	2	√8
Cr²⁺	[Ar] 3d⁴	4	√24

Therefore, the ion with the maximum magnetic moment is Mn²⁺.