Question

According to Bohr's atomic model,

• A. Electrons revolve around the nucleus and continuously emit energy.
• B. The energy of an electron does not alter with the change of the orbit.
• C. Electrons revolve around the nucleus in spiral paths called stationary orbits.
• D. A fixed amount of energy is emitted when an electron jumps from an outer orbit to an inner orbit.

Answer 1

The correct option is D

A fixed amount of energy is emitted when an electron jumps from an outer orbit to an inner orbit.

The explanation of the correct option-

The postulates of Bohr's atomic model are-

1. Electrons (negatively charged) revolve around the nucleus (positively charged) in definite circular paths called orbits or shells.
2. These orbital shells have fixed energy.
3. The orbits n=1, 2, 3, 4… are assigned as K, L, M, N…. shells, and the lowest energy level is said to be the ground state.
4. When an electron jumps from a higher energy orbit to a lower energy orbit, a fixed amount of energy is lost by the electron.
5. Electron gains fixed amount of energy to move from lower energy orbit to higher energy orbit.

Therefore, according to Bohr's atomic model, a fixed amount of energy is emitted when an electron jumps from an outer orbit to an inner orbit.

The correct option is d).