Color In Transition Metal Ions
Aqueous solution of Ti3+ is colored because:
Select the correct option:
Solution
presence of one unpaired d electron allows d-d transition
Ti3+ has configuration [Ar] 3d1. In a ligand field, d orbitals split into different energy levels, and absorption of visible light can promote the d electron between split levels (d-d transition). This selective absorption imparts color to the ion. Completely filled or empty d subshells usually do not show such d-d color behavior.
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About This Question
- Subject
- chemistry
- Chapter
- d- and f-block elements
- Topic
- color in transition metal ions
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
presence of one unpaired d electron allows d-d transition
Ti3+ has configuration [Ar] 3d1. In a ligand field, d orbitals split into different energy levels, and absorption of visible light can promote the d electron between split levels (d-d transition). This selective absorption imparts color to the ion. Completely filled or empty d subshells usually do not show such d-d color behavior.
This medium difficulty chemistry question is from the chapter d- and f-block elements, covering the topic of color in transition metal ions. It appeared in the 2025 exam.
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