Question

As long as an electron is in a particular orbit, the electron can never lose its energy on its own.
(A)- True
(B)- False

Answer 1

From the atomic models devised, the position of the electron in the atom was known. As being a negatively charged species it experiences attractive force from the positively charged nucleus, and thus revolves around it in stationary orbits having quantised energy.

Complete answer:
As from the Bohr’s atomic model, it was proposed that the electrons revolve around the nucleus in fixed orbits. Also, called as the stationary orbit, where the electrons experience the attractive force from the nucleus.
It is in the ground state in which the electrons with fixed energy revolve in a particular orbit with quantised size and energy. Thus, having the most stable arrangement.
So, it is only possible for the electron to gain or lose its energy to reach back to the original stable arrangement, which may occur through the jumping of the electrons from the higher energy levels to the lower energy level by the loss of energy in the form of photons or from the lower to the higher energy level by absorption of the photon. Thus, the energy within the atom remains conserved.
It is through this emission or absorption of the radiations by the electrons which helps in identifying the kinds of atoms or molecules in the field of spectroscopy.

Therefore, the statement that as long as an electron is in a particular orbit, the electron can never lose its energy on its own is option (A) True.

Note:
The electrons as it jumps from one energy level to another, it takes a quantum leap, that is, it is not found in anyplace in between the two energy levels.