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

0 0 Views | Posted 6 months ago
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    Answered by

    Vishal Baghel | Contributor-Level 10

    6 months ago

    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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