Question

Will chlorine 35 and 37 have same valency justify your answer

Answer 1

The valency is equal to the number of protons or number of electrons. Since number of protons and electrons are same in both chlorine 37 and chlorine 35, they will have same valency.

Answer 2

yes, they will have same valencies. This is because the change in mass number is the result of variation in neutron numbers, but the electron or proton number will remain constant. Hence, it's electronic configuration of the valence shell will remain constant.