Rutherford's experiment on the scattering of `alpha` particles slowed for the first time that the atom has

Options

A. protons
B. nucleus
C. neutrons
D. electrons

Answer

B

Explanation

To explain the fact that occasionally an `alpha` particle was turned back, Rutherford proposed that an atom's positive charges (protons) are all concentated in a dense central core within the atom which he called the nucleus. When an `alpha` particle does happen to hit a metal-atom nucleus, it is repelled back by the massive, positively charged nucleus.