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The appearance of colour in solid alkali...

The appearance of colour in solid alkali metal halides is generally due to

A

F-centres

B

Schottky defect

C

Frenkel defect

D

Interstitial positions

Text Solution

Verified by Experts

The correct Answer is:
A
Solid alkali metals are usually coloured because of F centres (farbe centres) which have free electrons that can absorb light of visible range.
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