Naturally occurring chlorine is `75. 53% Cl ^(35)` which has an atomic mass of `34.969 amu` and `24. 47% Cl^(37)`, `24.47%Cl^(37)`, which has a mass of `36. 966` amu. Calculate the average atomic mass of chlorine.

Explanation

Average atomic mass `= ("% of I isotope" xx "its atomic mass" +"% of II isotope" xx "its atomic mass")/(100)`
Average atomic mass `= (75.53 xx 34.969+24.47xx36.966)/(100)= 35.46` amu