atomic mass of chlorine is 35 5 it has two isotopes of atomic mass 35 and 37 what - Chemistry - Basic Concepts in Chemistry

Question

atomic mass of chlorine is 35 5 it has two isotopes of atomic mass
35 and 37 what is the percentage of heavier isotopes in the sample

Vartika Jain · Accepted Answer

Dear Student,

Relative atomic mass= (% mass of first isotope) + (% mass of second isotope)Let % of first isotope be x or, x%=x100Therefore, % of second isotope = (100-x) %or, (100-x)%=100-x100So, 35×x100+37×x-100100= 35
5or, x= 75Therefore, mass of heavier isotope =100-75=25

atomic mass of chlorine is 35.5 .it has two isotopes of atomic mass 35 and 37. what is the percentage of heavier isotopes in the sample