What do an atom, ion, and isotope of an element have in common? My assignment is due today, please reply

Isotopes are atoms that have the same number of protons but different numbers of neutrons. An ion is an atom or molecule with a positive or negative charge.

The number of protons. Versus the more general atom, an ion has a different number of electrons, and an isotope, a different number of neutrons. However, if you change the proton count—you change the element.

im not exactly sure but i think its b!