The atom is not an isotope. The atomic number is less than 17. The atom has an odd number of neutrons. The number of protons does not equal the number of neutrons.
I gave my students this multiple choice question: If the atomic mass number of an atom is 35, which statement is most accurate?

Only one answer is correct among these 4 choices:
- The atom is not an isotope.
- The atomic number is less than 17.
- The atom has an odd number of neutrons.
- The number of protons does not equal the number of neutrons.

Could you tell me which one is correct?

The number of protons does not equal the number of neutrons.