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an element of atomic weight x consists of 2 isptopes of mass number (x-1) and (x+2). what is the percentage abundunce of heavier isotope?????????......... sir plzzz explian each and every step ......... i will surely approve >>>>>>>>>

an element of atomic weight x consists of 2 isptopes of mass number (x-1) and (x+2). what is the percentage abundunce of heavier isotope?????????.........   sir plzzz explian each and every step  .........   i will surely approve >>>>>>>>>

Grade:Upto college level

1 Answers

Amitabh Shrivastava
32 Points
10 years ago

The atomic weight of an element depends on relative abundance of its isotopes.

In this case let y be the % of heavier isotope. then % of lighter one =100-y

Now the atomic mass of element (x)=[(x-1)(100-y)+(x+2)y]/100

Solve the above eqn to get y.

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