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

1.	. Alkali metals give colouration when heated in Bunsen flame. Give reason.
Answer» <html><body><p></p>Solution :When the alkali <a href="https://interviewquestions.tuteehub.com/tag/metals-1094891" style="font-weight:bold;" target="_blank" title="Click to know more about METALS">METALS</a> salts moistened with concentrated hydrochloric acid are near a platinum wire in a flame, they show characteristic <a href="https://interviewquestions.tuteehub.com/tag/coloured-922406" style="font-weight:bold;" target="_blank" title="Click to know more about COLOURED">COLOURED</a> flame <br/>LithiumCrimson red <br/>SodiumYellow <br/>PotassiumLilac <br/>RubidiumReddish violet<br/>CaesiumBlue<br/>The heat in the flame excites the valence <a href="https://interviewquestions.tuteehub.com/tag/electron-968715" style="font-weight:bold;" target="_blank" title="Click to know more about ELECTRON">ELECTRON</a> to a higher energy level. W <a href="https://interviewquestions.tuteehub.com/tag/back-389278" style="font-weight:bold;" target="_blank" title="Click to know more about BACK">BACK</a> to its actual energy level, the excess ne excess energy is emitted as light whose wa in the visible region produces colour.</body></html>

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