Question

chlorine has isotopes cl 35 nd cl 37.there are three cl 35 isotopes for every one cl 37 isotopes in a sample of chlorine. calculate the atomic mass of chlorine.?

Answer 1

Dear Apurv Anand,

Average atomic wt of chlorine has been calculated as follows

m1 = at. mass of 1st isotope (35); x1 = percentage or ratio of respective isotope = 3
m2 = at. mass of 2nd isotope (37); x2 = percentage or ratio of respective isotope = 1


$\mathrm{Average}\mathrm{atomic}\mathrm{wt}.=\frac{\mathrm{m}1\mathrm{x}1+\mathrm{m}2\mathrm{x}2}{\mathrm{x}1+\mathrm{x}2}\Rightarrow \frac{35\times 3+37\times 1}{4}\Rightarrow 35.5$
Regards,