Question

Which statement(s) related to the energy levels of electrons is/are true? Choose all that apply.

Select one or more:

a. Electrons can sometimes be found between the energy levels.

b. An electron in an atom can occupy any of the atom's energy levels.

c. The wavelengths of the photons emitted or absorbed are unique to a specific element.

d. Electrons within an atom require the absorption or emission of a photon of any wavelength to change energy levels.

e. The energy level farthest from the nucleus is the first excited state.

Answer 1

Option a is not correct as we know that electron can not exist between the states. they only can be found in the allowed energy states.

Option b is correct. An electron can occupy any allowed state. However all transitions are not allowed.

Option c is correct. The wavelength of photon emmited or absorbed are unique. Energy of emitted or absorbed photon is equal to the energy difference between the two states.

First excited energy level means the energy level just above the ground state. It is not necessarily the farthest energy level from the Nucleus. So option d is incorrect.

Option d is incorrect reson is same as in c.