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Ananya Shree

Class 11th
Chemistry
6 months ago

Why are potassium and caesium, rather than lithium used in photoelectric cells?

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Muskan Anand

6 months ago

The ionization potentials of potassium and cesium are lower than that of lithium. On exposure to light, potassium and caesium easily emit electrons however lithium does not. Hence, potassium and caesium are used in the photoelectric cell

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