Question

Element having atomic no 17,elment =17,tell it's mass no and protons

Answer 1

Answer:

I hope it will help you out

Explanation:

The number of neutrons is same as the number of protons. This sum of protons and neutrons is called as the mass number. Chlorine has an atomic number of 17 and so the mass number is (17 + 17) = 35.