# With what maximum kinetic energy will electrons be ejected

The kinetic energy of an ejected electron is determined by the work function of the material. The work function is the minimum amount of energy required to remove an electron from the surface of a material. The work function of a material is dependent on the material itself and can be found in various sources. In general, metals have lower work functions than non-metals. For example, the work function of aluminum is 4.52 eV, while the work function of carbon is 11.26 eV.

The maximum kinetic energy of an ejected electron is equal to the work function of the material. So, for aluminum, the maximum kinetic energy of an ejected electron would be 4.52 eV.

## Other related questions:

### Q: How much energy does it take to eject an electron?

A: It takes around 1 electronvolt (eV) of energy to eject an electron from a metal surface.

### Q: What is the maximum kinetic energy of electrons ejected from sodium?

A: The maximum kinetic energy of electrons ejected from sodium is approximately 15 eV.

### Q: What is the maximum kinetic energy of an emitted electron if light with a frequency?

A: There is no definitive answer to this question since it depends on the specifics of the light source (i.e., its frequency and intensity). In general, however, the maximum kinetic energy of an emitted electron will be proportional to the frequency of the light source.