Question

Q.1 An element of atomic weight X consists of two isotopes of Mass number (X – 1) and (X + 2). What is the percentage abundance of heavier isotope ?

Answer 1

heya....

z=x(z+2)+(1−x)(z−1)z=x(z+2)+(1−x)(z−1)

z=xz+2x+z−xz−1+xz=xz+2x+z−xz−1+x

0=3x−1⟹x=130=3x−1⟹x=13

Therefore, the abundance of the heavier isotope is 3333%

tysm...@kundan