NEET Chemistry The s-Block Elements Questions Solved


Assertion : Potassium and caesium are useful as electrodes in photoelectric cells.

Reason :  Potassium and caesium, when irradiated with light, the light energy absorbed is sufficient to eject out the electron from an atom.

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(A). Low ionisation energies of potassium and caesium.

Difficulty Level:

  • 80%
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