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.

Answer: (c). (a) false: in Rutherford's model electrons revolve, so they are not in static stable equilibrium; in Thomson's model electrons can sit at rest in equilibrium. (b) false: it is the reverse, Thomson's model has nearly uniform mass, Rutherford's is highly concentrated. (c) true: an accelerating revolving electron radiates energy classically and spirals into the nucleus. (d) false: in both models the positive part carries most of the mass. So the answer is (c).

Choose the correct option from the following options given below: | JEE Main 2022 (24 Jun, Shift 1)

Q8JEE Main 2022 · 24 JUN · SHIFT 1Medium

Atomic Models & Alpha-Particle Scattering

Choose the correct option from the following options given below:

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Answer: (c)

(a) false: in Rutherford's model electrons revolve, so they are not in static stable equilibrium; in Thomson's model electrons can sit at rest in equilibrium.
(b) false: it is the reverse, Thomson's model has nearly uniform mass, Rutherford's is highly concentrated.
(c) true: an accelerating revolving electron radiates energy classically and spirals into the nucleus.
(d) false: in both models the positive part carries most of the mass.
So the answer is (c).

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