Question

What is the reason for the color imparted to the flame of alkali metals?

Answer 1

when alkali metals are exposed to flame test, the loosely bounde electrons which present in valency shell are excited to higher energy levels, after some time they will come back

Answer 2

$\huge\red{Answer}$

Alkali metals impart characteristic colours to the flame due to low ionisation enthalpy, when an alkali metal or its salt is heated in a flame, the valence electrons are excited to higher energy level.

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