Isotopes are elements with same atomic number Z= number of protons but different mass number A, where A= Z+N, N= number of neutrons which is variable. As for radioisotopes, I’ve never heard of them before !
Answer:
C
Explanation:
because it is. because it is. 1 +2 = 3 right and c is the 3rd letter in the alphabet so it is c
Its A because dolphins like to fallow boats not to be scared