Question

Out of Ti³⁺, Cr³⁺, Mn²⁺ and Ni²⁺ ions, the one which has the highest magnetic moment is:

• A. Ti³⁺
• B. Cr³⁺
• C. Mn²⁺
• D. Ni²⁺

Hint:

To find magnetic moment, count unpaired electrons and use the formula \( \mu = \sqrt{n(n+2)} \).

Answer 1

The Correct Option is C

\r The electron configuration of Mn²⁺ is [Ar] 3d⁵, indicating 5 unpaired electrons. The magnetic moment is calculated using the formula \( \mu = \sqrt{n(n+2)} \). With n = 5, the magnetic moment is \( \mu = \sqrt{35} \approx 5.92 \, \mu_B \), which is the maximum among the provided choices.\r