Question

on heating KCl
an atmosphere of K vapour it becomes violet
in colour Account for this.
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Answer 1

Answer:

HEY MATE

When crystals of KCl are heated in an atmosphere of potassium vapour, the potassium atoms are deposited on the surface of the crystal. ... They impart violet colour to the crystals of KCl. The colour results by excitation of these electrons when they absorb energy from the visible light falling on the crystals.

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Answer 2

Answer:

It is because of the Metal excess defect due to anionic vacancies. When crystals of KCl are heated in an atmosphere of potassium vapour, the potassium atoms are deposited on the surface of the crystal. ... They impart violet colour to the crystals of KCl.

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