Question

The spin only magnetic moment of Cr³⁺ cation is ______.

विकल्प

• 3.742 BM

• 3.755 BM

• 3.873 BM

• 3.633 BM

Answer 1

The spin only magnetic moment of Cr³⁺ cation is 3.873 BM.

Explanation:

Cr = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹

Cr³⁺ = 3d³;

n = 3 (number of unpaired electrons)

Hence, `mu = sqrt("n"("n + 2"))`

`mu = sqrt(3(3 + 2))`

`mu = sqrt15`

μ = 3.873