Electrons are ejected when sodium metal is irradiated with 400 nm light. what is the velocity of the electrons? (φna = 4.4 x 10-19 j)

The velocity of the sodium electrons is  m/s

Given the following data:

To find the velocity of the sodium electrons, we would use the equation of photoelectric effect:

Mathematically, the photoelectric effect is given  by the formula:

Where:

First of all, we would determine the photon frequency of the light.

Photon frequency =  Hertz

Now, we can determine the kinetic energy from eqn 1:

K.E = Joules.

Also, the kinetic energy possessed by an electron is given by the formula:

Velocity = m/s

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explanation: