question_answer 51)

  Which of the following statement is always correct? (a) An atom has equal number of electrons and protons (b) An atom has equal number of electrons and neutrons (c) An atom has equal number of protons and neutrons (d) An atom has equal number of electrons, protons and neutrons

Answer:

  (a) Atom is electrically neutral. It is possible only if an atom has equal number of protons and electrons