Chemistry - Atomic Structure Question with Solution | TestHub

Charge transfer spectra arise due to transfer of electrons between two different species (metal–ligand or within ions), producing intense colours.

• KMnO₄ → colour due to ligand-to-metal charge transfer (O → Mn).
• K₂Cr₂O₇ → colour due to charge transfer (O → Cr).
• KO₂ → colour is mainly due to electronic transitions within superoxide ion, not charge transfer.
• AgI → colour is not due to charge transfer spectrum; related to its electronic band structure.

Correct Answer: (B), (D)