electrons ejected [ENDORSED]

[lauraxie2e]

If the energy of light is less than the ionization energy does that mean no electrons are ejected?

[Joseph Saba]

Yes, in order for an electron to be ejected, the photon must contain the threshold energy based on E=hv.

[Jacob Motawakel]

Yes, the ionization energy is the energy it takes to remove an electron, making it the threshold energy. So the energy of the light has to be equal to or greater than the threshold energy to successfully surpass the threshold energy, and remove the electron.

[Chetas Holagunda 3H]

Adding on, if the energy of the photon is more, that means the electron is ejected has more energy in the form of kinetic energy. This kinetic energy of the displaced electron can be calculated by E(photon) - E(threshold of electron) = kinetic energy.