Chemistry, asked by mps19810912, 10 months ago

Calculate the KE of a photoelectron emitted by a sodium surface when light of wavelength 400 nanometer is incident on it .The work function of sodium is 2.28 electronvolt

Answers

Answered by shilpanarzary04934
4

Answer:

Work function of the metal is 4.2 eV;

Given: λ=330nm.

The energy of incident photon is given by,

E=hc/λ

E=

330×10

−9

6.63×10

−34

×3×10

8

E=6×10

−19

J or 3.79eV

E is less than work function.

Hence, no photoelectric emission will take place.

Explanation:

hope it helps you.....

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