Choose the correct option for the following:
The alpha particles used in Rutherford’s experiment are positively charged particles, in fact each one consists of?
a) 2 protons and 2 neutrons
b) 1 proton and 2 neutrons
c) 1 proton and 1 neutron
d) None of the above
The correct option is a) 2 protons and 2 neutrons.
Therefore, the alpha particles used in Rutherford’s experiment are 2 protons and 2 neutrons which are positively charged particles.
Rutherford model is also known as planetary model of the atom. Ernest Rutherford proposed this structure of atoms in the year 1911. According to the model, the atom is a tiny, dense, positively charged particle with nucleus at the core.