Assertion: For the scattering of `alpha`-particles at a large angles, only the nucleus of the atom is responsible.
Reason: Nucleus is very heavy in comparison to electrons.

(A) For the scattering of a.-particles at a large angles. only the nucleus of the atom is responsible. (R) : Nucleus is very heavy in comparison to electrons.

For scattering of alpha -particles at large angles, only the nucleus of the atom is responsible, explain why?

General instructions same as in chapter 1. Assertion:Large angle scattering of alpha particle led to the discovery of atomic nucleus. Reason:Entire positive charge of atom is concentrated in the central core.

In Rutherford's scattering experiment of alpha -particles by metallic foils, with the increase of atomic number of nucleus, the scattering angle .

What is energy of the electron when it is at a very large distance from the nucleus?

Assertion: Radioactive nuclei emit beta particles. Reason: electron exist inside the nucleus.