Question

On Bohr stationary orbits:

• A. electrons do not move
• B. electrons move emitting radiations
• C. energy of the electron remains constant
• D. angular momentum of the electron is $\frac{h}{2\pi }$

Answer 1

Answer: (C)

energy of the electron remains constant

On Bohr stationary orbits energy of the electron remains constant as the electron moves in the orbit without gaining or losing the energy.

Each stationary state is associated with a definite amount of energy.
The electrons move in stationary orbits without emitting radiations.
The angular momentum of the electron is $mur=\frac{nh}{2\pi }$.

Hence, the correct option is $\text{C}$