Answer:
Option (B).
Explanation:
Atoms consist three subatomic particles that are electron, proton and neutron. Electrons participates in the formation of ions and has the ability to gain or lose the electrons.
Electron revolves around the nucleus whereas protons and neutrons are present inside the nucleus. Protons are positively charged and their number can not be changed inside the atom. Protons does not have the ability to push the electrons. Electron revolve in the fixed orbit and cannot fall down in the nucleus.
Thus, the correct answer is option (B).
