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Standard XII
Chemistry
Trend in Ionisation Enthalpy
Which of the ...
Question
Which of the following is used in photoelectric cells?
A
Li
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B
Na
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C
Cs
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D
All of these
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Solution
The correct option is
C
Cs
Because of low ionization potentials, Cs is used in photoelectric cells. The low energy photons can eject electrons from their metals.
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