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Choose the correct alternative from the clues given at the end of the each statement:
$(a)$ The size of the atom in Thomson’s model is .......... the atomic size in Rutherford’s model. (much greater than/no different from/much less than.)
$(b)$ In the ground state of .......... electrons are in stable equilibrium, while in .......... electrons always experience a net force. (Thomson’s model/ Rutherford’s model.)
$(c)$ A classical atom based on .......... is doomed to collapse. (Thomson’s model/ Rutherford’s model.)
$(d)$ An atom has a nearly continuous mass distribution in a .......... but has a highly non-uniform mass distribution in .......... (Thomson’s model/ Rutherford’s model.)
$(e)$ The positively charged part of the atom possesses most of the mass in .......... (Rutherford’s model/both the models.)
Solution
$(a)$ The sizes of the atoms taken in Thomson's model and Rutherford's model have the same order of magnitude.
$(b)$ In the ground state of Thomson's model, the electrons are in stable equilibrium. However,in Rutherford's model, the electrons always experience a net force.
$(c)$ A classical atom based on Rutherford's model is doomed to collapse.
$(d)$ An atom has a nearly continuous mass distribution in Thomson's model, but has a highlynon-uniform mass distribution in Rutherford's model.
$(e)$ The positively charged part of the atom possesses most of the mass in both the models.
