Question

when NaCl is heated in na vapour it turns yellow why

pls ans​

Answer 1

Answer:

Sodium chloride on heating with sodium vapours acquires yellow colour because sodium chloride crystal suffers metal excess defect with sodium vapours on heated condition. Due to electronic transition at the excited state of sodium atom, it appears yellow.

Explanation:

When NaCl is heated in Na vapor, the excess sodium deposits on the surface. Cl- diffuses to the surface where they combine with the Na atoms. These Na atoms lose the electrons....The electrons absorb some energy from the white light and then re-emit it as the yellow color.