What must happen for an electron to return to its original energy level from a higher energy level?A.It must release photons.B.It must emit electrical energy.C.It must absorb electrical energy.D.It must absorb photons.

Which of the following is an example of when an electron absorbs energy?1 pointWhen it goes from the fourth energy level to the first.When an electron releases a photon.When it goes from the second energy level to the fourth.When it maintains constant energy and doesn't change its energy level.

9. What occurs when an electron moves from high- energy level to alow one?A. The atom moves fasterB. Colored light is given offC. This process is not possibleD. Another electron goes from a low energy level to a high one.

When an electron moves from a lower to a higher energy level, the electronGroup of answer choicesabsorbs a quantum of energy.moves closer to the nucleus.always doubles its energy.releases a quantum of energy

In the diagram below, a photon of energy E = hf = Φ is incident on an electron at the energy level shown.What will happen?Select one:a.the electron will be emitted because it can interact with two or more photons at the same timeb.the electron moves up in energy and can be emitted if it interacts a second photon some time afterwardsc.the electron cannot be emittedd.the electron can be emitted if a biasing voltage of + ɸ/e is appliede.the electron can be emitted if a biasing voltage of - ɸ/e is applied

In order to explain the results of a photoelectric effect experiment, quantum physics suggests that:(select all that apply)Question 3Answera.light energy is quantised (in the form of photons)b.electron energies are quantised into levelsc.electrons store the energy from several photons to build up and excite over time.d.electrons can interact with photons only on an all or nothing basise.electrons can absorb any energyf.electrons can only be ejected from a metal with an excess negative chargeCheckQuestion 3