Which particles are present in the nucleus of an Atom?

Which particles are present in the nucleus of an Atom?

  1. A. Electron and proton
  2. B.Only electrons
  3. C. Electron and neutron
  4. D. Proton and neutron

D. Proton and neutron
An atom has electrons surrounding a nucleus which contains protons and neutrons. An atom consists of a nucleus containing protons and neutrons, surrounded by electrons.

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