68. Which of the following does the nucleus of an atom consists of? A.Protons and neutrons B.Protons and electrons C.Electrons D.Protons
Answer: Option A Solution: The nucleus of an atom consists of neutrons and protons, which in turn are the manifestation of more elementary particles, called quarks, that are held in association by the nuclear strong force in certain stable combinations of hadrons, called baryons.
