Some ions of transition metals are given below. Categorize them into t – InterviewSolution

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Some ions of transition metals are given below. Categorize them into those which are coloured or not. Justify your answer.Ti3+,V2+, Sc3+, Mn2+, Ti4+, Cu2+, Zn2+,Cu+

Answer»

Coloured ions	Colourless ions
Ti³⁺	Sc³⁺
V²⁺	Ti⁴⁺
Mn²⁺	Zn²⁺
Ca²⁺	Cu⁺

In Ti³⁺, V²⁺, Mn²⁺, Ca²⁺d-d transition is possible. Hence they have colour.
In Sc³⁺ and Ti⁴⁺ (3d⁰), Zn²+ and Cu+(3d¹⁰) d-d transition is not possible.

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