Stable isotopes,with low atomic numbers,have a N/Z ratio of 1.What does that imply?

Question

Quizplus · Accepted Answer

The N/Z ratio refers to the ratio of the number of neutrons (N) to the number of protons (Z) in an atom. If a stable isotope with low atomic number has a N/Z ratio of 1, it means that the number of neutrons is equal to the number of protons, which is also known as the neutron number and proton number being equal (N = Z), and the isotope is considered to be electrically neutral.

Stable Isotopes,with Low Atomic Numbers,have a N/Z Ratio of 1