If the Thomson model of the atom was correct, then the result of...

If the Thomson model of the atom was correct, then the result of Rutherford's gold foil experiment would have been:

Options

AAll of the $\alpha$ -particles pass through the gold foil without decrease in speed.
B $\alpha$ -particles are deflected over a wide range of angles.
CAll $\alpha$ -particles get bounced back by $180 °$ .
D $\alpha$ -particles pass through the gold foil deflected by small angles and with reduced speed.

Correct answer

D. $\alpha$ -particles pass through the gold foil deflected by small angles and with reduced speed.

Step-by-step solution

According to Thomson's plum pudding model, protons are diffused in a positively charged cloud (charge is not centred) and the negatively charged particles are embedded in it. So, the

\alpha

- particles would deviate by small angles and due to repulsion from protons, their speed would decrease.

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