Electron revolves around nucleus in orbits which have-

Correct option is C

The correct answer is (c) Fixed energy.
· Electrons revolve around the nucleus in specific orbits or shells that have fixed energy levels.
· This concept is based on Bohr’s model of the atom, which states that electrons can only occupy certain energy levels, not in between them.
· These fixed energy levels prevent the electrons from spiraling into the nucleus, as they maintain a stable orbit.
· When an electron moves between orbits, it absorbs or releases energy equal to the difference between the two energy levels.
Information Booster:
· Energy Levels or Shells: These are denoted as K, L, M, N shells, where K has the lowest energy and is closest to the nucleus.
· Quantum Jump: When electrons move between energy levels, they absorb or emit photons corresponding to the energy gap.
· Bohr’s Postulate: This model of fixed energy orbits explains atomic stability and the emission spectrum.
· Stationary States: These fixed orbits are also known as stationary states because electrons do not lose energy while in a stable orbit.