Question

Q3 - Rutherford's Experiment , which established the nuclear model of the atom , used a beam of
a) β- particles , which impinged on a metal foil and got absorbed
b) γ- rays , which impinged on a metal foil and ejected electrons
c) Helium atoms, which impinged on a metal foil and got scattered
d) Helium nuclei, which impinged on a meta foil and got scattered
____________________________________________________________________

Answer 1

helium nuclei,which impinged on a metal foil and got scattered.

Answer 2

Rutherford used alpha-particles, which are helium nuclei.
(i.e. Helium atom with its two electrons removed , so that only the nucleus is left)

So, your answer is
D) Helium nuclei, which impinged on a metal foil and got scattered.