Question

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

Options

• All of the a-particles pass through the gold foil without a decrease in speed.

• α-Particles are deflected over a wide range of angles.

• All α-particles get bounced back by 180°.

• α-Particles pass through the gold foil deflected by small angles and with reduced speed.

Answer 1

α-Particles pass through the gold foil deflected by small angles and with reduced speed.

Explanation:

As in the Thomson model, protons are diffused (charged is not centred) α-particles deviate by small angles and their speed decreases due to repulsion from protons.