Physics · Coordination Chemistry and Spectroscopy
The intense red color of the gemstone ruby is predominantly due to which of the following phenomena?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Red emission (phosphorescence) of Al 3+ ions
- 2Red emission (fluorescence) of Cr 3+ ions✓
- 3O 2- to Cr 3+ charge transfer
- 4O 2- to Al 3+ charge transfer
Correct answer
Red emission (fluorescence) of Cr 3+ ions
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