Which electron transition in an excited atom results in a release of energy? first shell to the third shell second shell to the fourth shell third shell to the fourth shell fourth shell to the second shell?

fourth shell to the second shell

Explanation:

When an electron of an atom moves from a lower energy shell to a higher energy shell (such as 1st shell to the 3rd shell), it absorbs energy through a specific wavelength of electromagnetic wave equivalent to the difference in energy levels of the electron shells.

Conversely, when the electron jumps from a higher electron shell to a lower one (such as  in this case) it releases energy, in the form a specific wavelength of electromagnetic wave, equivalent to the difference in energy levels between the two electron shells.

f=ma a/f/m a= 480/60 a = 8m/s/s that is quick wow

small = small current large mag large current