When an electron from an outer shell fills a vacancy in an inner shell,
A)the total energy of the electron increases.
B)the electron increases its mass.
C)a photon is released.
D)all of the above

Question

Quizplus · Accepted Answer

When an electron from an outer shell fills a vacancy in an inner shell, it releases energy in the form of a photon with a specific wavelength. The total energy of the electron does not increase, and there is no change in the electron's mass.

When an Electron from an Outer Shell Fills a Vacancy