Which of the following elements is used in a | vedclass

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(C) $1$. Metals that have low ionization enthalpies are used in photoelectric cells.$2$. The most popular metal used in photoelectric cells is Caesium

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Caesium

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(C) $1$. Metals that have low ionization enthalpies are used in photoelectric cells.$2$. The most popular metal used in photoelectric cells is Caesium $(Cs)$,which has the atomic number $55$.$3$. Caesium belongs to group $1$ (alkali metals) and period $6$.$4$. The electronic configuration of Caesium is $[Xe] 6s^1$.$5$. Caesium is used widely in photocells as it can easily convert solar energy into electrical energy.$6$. When Caesium is exposed to sunlight,it starts emitting electrons,which induces electric flow and generates electricity.$7$. Thus,Caesium is the most preferred metal used in photoelectric cells.

Which of the following elements is used in a photoelectric cell?

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