Which alkali metal emits blue colour light in | vedclass

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Question

(A) In a flame test, different alkali metals impart characteristic colours to the flame due to the excitation of electrons to higher energy levels. $L

Vedclass · Accepted Answer

$Cs$

Vedclass · Answer

(A) In a flame test, different alkali metals impart characteristic colours to the flame due to the excitation of electrons to higher energy levels. $Li$ imparts a crimson red colour. $Na$ imparts a golden yellow colour. $K$ imparts a lilac (pale violet) colour. $Cs$ (Caesium) imparts a blue colour to the flame. Therefore, the correct answer is $Cs$.

Which alkali metal emits blue colour light in a flame test?

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