Question

Consider Ernest Rutherford's a-particle bombardment experiment illustrated in Fig. 2. 11. How didthe results of this experiment lead Rutherford away from the plum pudding model of the atom topropose the nuclear model of the atom?

Short answer

The alpha particles deflection in addition to large angles leads to Rutherford atom model away from plum pudding model.

Step-by-step solution

Understanding of Plum pudding model of an atom

The initial concept is to find the plum pudding model of atom. In this model, there is a diffusion of positive charges with the surrounding electrons floating.

Observation of significant deflection

In Ernest Rutherford’s particle bombardment experiment of alpha particles, he observed that there is an alpha particle deflection.

Observation of minor and major deflections

When there is a minor deflection, think that the proton diffusion can cause. There is a major deflection when he thinks that atom as bulky positive charged mass and present in the centre. Thus, the alpha particles deflection in addition to large angles leads to Rutherford atom model away from plum pudding model.