| Assertion (A): According to Rutherford, atomic model, the path of electron is parabolic. |
| Reason (R): Rutherford could not explain the stability of atom. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is true
Correct Answer: D
Solution :
Option (D) is correct. Explanation: According to Rutherford, "the entire positive charge and most of the mass of the atom is concentrated in a small volume called the nucleus, with electrons revolving around the nucleus just as planets revolve around the Sun." So the assertion is false. The electron orbiting around the nucleus radiate energy. As a result, the radius of the orbit continuously decreases and the electron fall into the nucleus. So, stability of atom is not explained. Hence the reason is true.
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