Grade 12th passInorganic Chemistry
Why are potassium and caesium, rather than lithium used in photoelectric cells?
Why are potassium and caesium, rather than lithium used in photoelectric cells?
1 Answer
Pawan Prajapati
Answer: Potassium and caesium have much lower ionization enthalpy than that of lithium. As a result, these metals easily emit electrons on exposure to light. Due to this, K and Cs are used in photoelectric cells rather than lithium.
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