Electron revolves around nucleus in orbits which have -

Question

Question

This question was previously asked in

RRB JE CBT I - (Held On: 1 June 2019 Shift 3)

Answer 1

The correct answer is Fixed energy

Key Points

Electrons revolve around the nucleus in orbits that have fixed energy.
According to the Bohr model of the atom, electrons can only occupy certain allowed orbits or energy levels.
Each orbit corresponds to a specific energy level, which is quantized.
Electrons do not radiate energy while they remain in a fixed energy orbit; they only emit or absorb energy when transitioning between orbits.
This quantization of energy levels helps explain the stability of atoms and the emission spectra of elements.

Additional Information

The concept of fixed energy levels was introduced by Niels Bohr in 1913 as part of his atomic model.
Bohr's model was a significant step forward from earlier atomic models, which could not explain the stability of atoms.
The idea of quantized energy levels was later incorporated into the more comprehensive quantum mechanical model of the atom.
In the quantum mechanical model, electrons are described by wave functions and the energy levels correspond to different atomic orbitals.
These fixed energy levels are crucial for understanding various chemical and physical properties of elements.