Question

Which of the following concepts was not considered in Rutherford's atomic model?

• A. The electrical neutrality of atom
• B. The quantization of energy
• C. Electrons revolve around the nucleus at very high speeds
• D. Existence of nuclear forces of attraction on the electrons

Answer 1

The correct option is B

The quantization of energy

The explanation for the correct option: (B)

1. It is according to Bohr's atomic model the electron remains in a particular orbit and it does not gain or lose energy.
2. Both the angular momentum and energy are quantized according to Bohr's atomic model.

The explanation for the incorrect options:

(A) According to Rutherford's atomic model the nucleus is surrounded by negatively charged electrons which balance the positive charge on the nucleus. Thus the atom as a whole is electrically neutral.

(C) The electrons are revolving around the nucleus at very high speeds according to Rutherford's atomic model.

(D) There exists an electrostatic force of attraction between the electrons and the nucleus and is balanced by the centrifugal force acting on the revolving electrons.

Hence option (b) is correct - The quantization of energy was not considered in Rutherford's atomic model.