Which element from the following is used in p | vedclass

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(C) Cesium $(Cs)$ is the element used in photoelectric cells.Explanation: Cesium is the preferred metal for photoelectric cells because it can easily

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$Cs$

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(C) Cesium $(Cs)$ is the element used in photoelectric cells.Explanation: Cesium is the preferred metal for photoelectric cells because it can easily convert sunlight into electricity.It has a very low ionization energy and is the most electropositive element among the alkali metals.The amount of energy required to eject electrons from a cesium surface is relatively small,only $206.5 \ kJ/mol$.

Compound	Flame color
$1$. $Li$	$a$. Crimson red
$2$. $K$	$b$. Violet
$3$. $Cs$	$c$. Blue

Which element from the following is used in photoelectric cells?

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Compound Flame color

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$2$. $K$ $b$. Violet

$3$. $Cs$ $c$. Blue

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