BITSAT 2024 Shift 1 Paper

Given the species, we need to determine which have the same magnetic moment by counting their unpaired electrons.
For the species Cr2+ and Mn3+, both have the same number of unpaired electrons:
Number of unpaired electrons, n=4
The magnetic moment µ is calculated using the formula:
µ=√n(n+2)=√4(4+2)=√24‌BM
Thus, Cr2+ and Mn3+ have the same magnetic moment.