Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

Explain the following term with suitable examples: F-centres

Can you answer this question?

1 Answer

0 votes
F-centres :
Alkali halides like NaCl and KCl show this type of defect when crystals of NaCl are heated in a atmosphere of sodium vapour the sodium atoms are deposited normal on the surface of the crystal.The $Cl^-$ ions diffuse to the surface of the crystal and combine with Na atoms to give NaCl.As a result crystal has now excess of sodium.They impart yellow colour to the crystal of NaCl.
Examples are : LiCl,KCl etc
answered Jul 30, 2014 by sreemathi.v
Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App