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12th Class Chemistry The Solid State / ठोस प्रावस्था Question Bank 12th CBSE Chemistry The Solid State

  • question_answer
      What makes alkali metal halides sometimes coloured which are otherwise colourless?                [Delhi 2004]

    Answer:

      Metal excess defect (anion vacancy) sometimes makes alkali metal halides coloured which are otherwise colourless.  


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