. Alkali metals give colouration when heated in Bunsen flame. Give rea

1.	. Alkali metals give colouration when heated in Bunsen flame. Give reason.
Answer» Solution :When the alkali METALS salts moistened with concentrated hydrochloric acid are near a platinum wire in a flame, they show characteristic COLOURED flame LithiumCrimson red SodiumYellow PotassiumLilac RubidiumReddish violet CaesiumBlue The heat in the flame excites the valence ELECTRON to a higher energy level. W BACK to its actual energy level, the excess ne excess energy is emitted as light whose wa in the visible region produces colour.

Discussion