Choose the correct option from the following options given below :
(A) In the ground state of Rutherford's model electrons are in stable equilibrium. While in Thomson's model electrons always experience a net-force.
(B) An atom has a nearly continuous mass distribution in a Rutherford's model but has a highly non-uniform mass distribution in Thomson's model
(C) A classical atom based on Rutherford's model is doomed to collapse.
(D) The positively charged part of the atom possesses most of the mass in Rutherford's model but not in Thomson's model.
(A) In the ground state of Rutherford's model electrons are in stable equilibrium. While in Thomson's model electrons always experience a net-force.
(B) An atom has a nearly continuous mass distribution in a Rutherford's model but has a highly non-uniform mass distribution in Thomson's model
(C) A classical atom based on Rutherford's model is doomed to collapse.
(D) The positively charged part of the atom possesses most of the mass in Rutherford's model but not in Thomson's model.
- (A)Statement (A)
- (B)Statement (B)
- (C)Statement (C)✓ Correct
- (D)Statement (D)
Answer: (C)
Solution
In Rutherford's model, electrons revolve around the nucleus in circular orbits, experiencing centripetal acceleration. According to classical electromagnetism, an accelerating charged particle must emit electromagnetic radiation, continuously losing energy. This would cause the electron to spiral into the nucleus, leading to atomic collapse. This fundamental instability was one of the key problems with Rutherford's model, later resolved by Bohr's quantum postulates. Statement (C) is correct.
JEE Main · 2022 · 24 Jun 2022 · Shift 1 · Single correct option