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Confused! kindly explain, The photoelectric effect was not observed for

The photoelectric effect was not observed for

  • Option 1)

    Potassium

  • Option 2)

    Rubidium

  • Option 3)

    Lithium 

  • Option 4)

    Caesium

 
Answers (1)
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As learnt in

Photoelectric Effect -

The electrons are ejected from the metal surface as soon as the beam of light of a particular frequency strikes the surface.

-

 

 Lithium has a very high ionization potential on account of its very small size thus making photoelectric effect difficult.


Option 1)

Potassium

The option is incorrect.

Option 2)

Rubidium

The option is incorrect.

Option 3)

Lithium 

The option is correct.

Option 4)

Caesium

The option is incorrect.

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