Ionization Energy vs Threshold Energy

[Yazmin Bocanegra 3L]

Are ionization energy and threshold energy the same thing?

[Qiu Ya Wu 4I]

Threshold energy and ionization energy both have to do with the minimum energy required to remove an electron from an element but threshold energy refers to the energy needed to remove an electron from a metal (photoelectric effect) while ionization energy has to do with the energy needed to remove an electron from a gas.

[Simon Dionson 4I]

Threshold energy is the minimum energy needed to remove an electron from a metal surface (photoelectric effect). Ionization energy is the energy needed to remove an electron from an element.

[Matthew Tsai 2H]

Threshold energy (represented by the work function) is relevant to the photoelectric effect because it refers to the energy required to remove a single electron from a certain metal surface. On the other hand, ionization energy is defined as the energy required to remove an electron from an atom in the gas phase.

[ShreyaKannan1B]

Threshold energy and ionization energy both have to do with the minimum energy required to remove an electron from an element but threshold energy refers to the energy needed to remove an electron from a metal (photoelectric effect) while ionization energy has to do with the energy needed to remove an electron from a gas.

Thanks for this!