Question

two different isotopes of zinc a) b) c) d). a have different chemical properties b have the same chemical properties c have the same number of neutrons d there can only be one kind of zinc

Explanation:

Isotopes are atoms of the same element with the same number of protons (so same atomic number) but different numbers of neutrons (different mass numbers). Chemical properties are mainly determined by the number of electrons (which is equal to the number of protons for neutral atoms). Since isotopes of the same element have the same number of protons (and thus same number of electrons), they have the same chemical properties.

Answer:

B. have the same chemical properties