Вопрос
A4.A photon with an energy of 13.6eV knocks an electron out of a hydrogen atom.The kinetic energy of the ejected electron is equal to __ eV. 1. 13.6 2.3.4 3. 10.2 40
Решения
4.5
(193 Голоса)
Богдан
мастер · Репетитор 5 лет
Ответ
The kinetic energy13.6 eV.
Объяснение
## Step 1The problem involves the photoelectric effect, where a photon with sufficient energy can knock an electron out of a hydrogen atom. The energy of the photon is given as 13.6 eV.## Step 2The kinetic energy of the ejected electron is determined by the energy of the photon. In this case, the photon's energy is exactly sufficient to remove the electron from the hydrogen atom.## Step 3According to the photoelectric effect, the kinetic energy of the ejected electron is equal to the energy of the photon. Therefore, the kinetic energy of the ejected electron is also 13.6 eV.