Electrons revolve around the nucleus in circular orbits called shells.
Electrons revolve around the nucleus in well-defined circular paths called orbits.
Electrons revolve around the nucleus in fixed orbits or shells called energy levels. State how these energy levels are represented.
‘Electrons revolve around the nucleus in fixed orbits or shells called energy levels. State how these energy levels are represented.
Electrons revolve around the nucleus in definite orbits called _________.