Question

Consider the hydrated ions of Ti²⁺, V²⁺, Ti³⁺ and Sc³⁺. The correct order of their spin-only magnetic moments is ______.

Options

• Sc³⁺ < Ti³⁺ < V²⁺ < Ti²⁺

• Sc³⁺ < Ti³⁺ < Ti²⁺ < V²⁺

• Ti³⁺ < Ti²⁺ < Sc³⁺ < V²⁺

• V²⁺ < Ti²⁺ < Ti³⁺ < Sc³⁺

Answer 1

Consider the hydrated ions of Ti²⁺, V²⁺, Ti³⁺ and Sc³⁺. The correct order of their spin-only magnetic moments is Sc³⁺ < Ti³⁺ < Ti²⁺ < V²⁺.

Explanation:

The spin-only magnetic moment depends on the number of unpaired electrons in the ion. More unpaired electrons mean a higher magnetic moment. So, in increasing order of magnetic moment, the species are Sc³⁺ < Ti³⁺ < Ti²⁺ < V²⁺.