When two atoms have the same number of protons and different numbers of neutrons they are ?

Question

A. Isomorphs

B. Chemically the same

C. The same weight

Answer 1

When two atoms have the same number of protons and different number of neutrons, then they are considered isotopes. In this case, they are isomorphs and have the identical chemical behavior. Weights are different (e.g., Carbon-12 and Carbon-13).