contestada

The charge of an atom from an excited state to the ground state always requires
a. an increase in electron energy
b. release of visible light
c. absorption of energy
d. emission of electromagnetic radiation

Respuesta :

emission of electromagnetic radiation

AL2006

The change of an atom from an excited state to the ground state always requires  emission of electromagnetic energy. (d)  

It may be visible, but it doesn't have to be ... that depends on how much energy is emitted.