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

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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+.

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