Question

What is atomic number and atomic mass of chlorine​

Answer 1

Answer:

atomic no.=17

and atomic mass =35.5

Answer 2

Answer:

the atomic mass of chlorine (Cl) is 35.45 amu because chlorine is composed of several isotopes, some (the majority) with an atomic mass of 35 amu (17 protons and 18 neutrons) and some with an atomic mass of 37 amu (17 protons and 20 neutrons).