Chemistry · Coordination Compounds
Why is Cu2+ ion colored while Zn2+ ion is colorless in aqueous solution?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Cu2+ forms covalent bonds with water molecules while Zn2+ forms ionic bonds
- 2Zn2+ undergoes rapid d-d transitions that absorb all wavelengths of visible light
- 3Cu2+ has an incomplete 3d9 configuration allowing d-d transition, whereas Zn2+ has a fully filled 3d10 configuration with no vacant d-orbital✓
- 4Cu2+ has a fully filled 3d10 configuration, whereas Zn2+ has an incomplete 3d9 configuration
Correct answer
Cu2+ has an incomplete 3d9 configuration allowing d-d transition, whereas Zn2+ has a fully filled 3d10 configuration with no vacant d-orbital
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