6Atomic Structure IsotopesEasy1 markWhich statement about an atom or an ion is correct?AIn an atom, the number of electrons is equal to the atomic number.BIn an atom, the number of neutrons is equal to the atomic number.CIn a sodium ion, Na+, the number of electrons is greater than the atomic number.DAn atom of hydrogen that contains one neutron has an atomic number of two.Grade answerGrading criteria