Answer:
1) Naturally occurring chlorine is 75.78% 35Cl, which has an atomic mass of 34.969 amu, and 24.22% 37Cl, which has an atomic mass of 36.966 amu
2)Bromine-79 atoms or more Bromine-80 ... Chlorine is made up of two isotopes, Cl-35 (34.969 amu) and Cl-37 (36.966 .
Explanation:
