Assertion : In Rutherford's $\alpha$-particle scattering experiment, most of the $\alpha$-particles

Question

Assertion : In Rutherford's $\alpha$-particle scattering experiment, most of the $\alpha$-particles were deflected by nearly $180^{\circ}$.\ Reason : The positive charge of the atom is spread throughout the atom that repelled and deflected the positively charged $\alpha$-particles.

Professor PC Thomas Classes · Answer

(d): In Rutherford's experiment, most of the $\alpha$-particles passed through the gold foil undeflected and a very few $\alpha$-particles were deflected by nearly $180^{\circ}$ because most of the space in the atom is empty and the positive charge is concentrated in a very small volume that repelled and deflected the positively charged $\alpha$-particles.