Question

(i)identify thebpair of isotopes and isobarsfrom the followings.

8X

16,7X

16,8X

17

(ii)Bromine‘Br’occurs in nature in two isotopic forms with atomic masses 79 u and 18u.The average atomic mass of bromine is 80.006u.Find the% occurrence of each

isotope of bromine. class 9​

Answer 1

Answer:

Isotopes XX mass(amu) X Isotopic abundance. Br-79 XXXX 78.92 XXXXX XX ? Br-81 XXXX 80.92 XXXXXXX ? average ...

IsotopesXXmass(amu)XIsotopic abundance Br-79XXXX78.92XXXXXXX? Br-81XXXX80.92XXXXXXX? average atomic mass=(mass*%+mass*%+mass*%...) Let x be % abundance ..