Calculate the ‘spin only’ magnetic moment of M 2+ (aq) ion (Z = 27).

Question

Philoid · Accepted Answer

Given, Z=atomic number = 27 = [Ar]3d⁷ 4s²

⇒ M²⁺ = [Ar]3d⁷

Hence, 3 unpaired electrons are present.

The spin only magnetic moment μ= √n(n+2)

Where n is the number of unpaired electrons.

Hence, μ =√(3×(3+2))

μ = √15 BM or μ = 3.87 BM