Which of the following is coloured? - CUETMOCK

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: D and F Block Elements

Question:

Which of the following is coloured?

Options:

Ti³⁺

Cu⁺

Sc³⁺

Zn²⁺

Correct Answer:

Ti³⁺

Explanation:

Ti³⁺= [Ar]3d¹; due to one unpaired electron in d-orbital (d-d) transition is possible, hence coloured.

But in other three ions, all have either fully filled d orbital or empty d orbital which makes d-d transitions impossible.

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