Question

Among the elements – Sc, Ti, V, Cr, Mn find magnetic moment of element which have highest ionization enthalpy in +2 oxidation state. [Nearest integer]

Answer 1

Correct answer is:  6

Sc⁺²  Ti⁺²   V⁺²   Cr⁺²   Mn⁺²

Mn⁺² will have highest I.E. due to its stable half filled configuration.

Mn → [Ar] 4s² 3d⁵ → 5 unpaired \(e^{\ominus}\)

μ_spin = \(\sqrt{5(5+2)}BM\)

\(=\sqrt{35}\)

≃  6