CBSE Class 12-science Answered
on heating crystals of KClin potassium vapours ,the crystals start exhibiting a violet colour ,why?
Asked by vatsala srivastava srivastava | 19 May, 2014, 12:35: PM
Expert Answer
- In presence of excess of potassium, Cl- ions leave their lattice sites creating anion vacancies which are occupied by electrons given out by potassium.
- These are called F- centres and are responsible for colour.
Answered by Vaibhav Chavan | 19 May, 2014, 02:00: PM
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