1.

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 neutronsC. An atom has equal number of protons and neutrons.D. An atom has equal number of electrons, protons and neutrons.

Answer»

An atom always has equal number of electrons and protons to maintain the
electrical neutrality.

Hence, the correct option is A.



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