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Question: Answered & Verified by Expert
The flame colours of metal ions are due to
ChemistrySolid StateCOMEDKCOMEDK 2013
Options:
  • A Frenkel defect
  • B Schottky defect
  • C metal deficiency defect
  • D metal excess defect
Solution:
1664 Upvotes Verified Answer
The correct answer is: metal excess defect
The flame colours of metal ions are due to metal excess defect. The free electrons can be exited to higher energy levels giving absorption spectra and as a consequence their compounds are coloured.

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