Which electron shell is at a higher energy level K or L ?

When electron transist from higher energy level to lower energy level then …..

What are energy levels or shells ?

When an electron drops from a higher energy level to a low energy level, then

When electron falls from a higher energy to a lower energy level the difference in the energies appears in the form of

When electron falls from a higher energy to a lower energy level the difference in the energies appears in the form of

when an electron falls from a higher energy to a lower energy level the difference in the energies appears in the form of

when an electron falls from a higher energy to a lower energy level the difference in the energies appears in the form of