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Q. Which of the following is true about ...

Q. Which of the following is true about F-centre ?

A

It is not common in alkali metal halides

B

F-centre impart pink colour to the crystal of NaCl

C

Excess of Li makes LiCl crystals pink and excess of potassium makes KCl crystals violet (or lilac). It is due to F-centre.

D

F-centre is a stiochiometric point defect.

Text Solution

Verified by Experts

The correct Answer is:
C
Excess of Li makes LiCl crystals pink and excess of potassium makes KCl crystals violet (or lilac). It is due to F-centre.
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