MCQ
Most copper (I) compounds are found to be colourless. This is due to:
- APresence of low oxidation state of copper.
- BCompletely filled d-level in Cu(I).
- CDiamagnetic nature of the compound.
- DHigh polarizability of Cu(I) ion.
✓
Answer
- Completely filled d-level in Cu(I).
Explanation:
In copper (I) ion there are no vacant d orbitals as it is diamagnetic. Copper(I) ion being less charged has small ligand field effect and the transition is in the infrared region in which no color is perceived by human eye.
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