Relative atomic mass of an element A is 16 2 There are 2 isotopes with mass no 16 and 18 - Science - Atoms and Molecules

Question

Relative atomic mass of an element A is 16 2 There are 2
isotopes with mass no 16 and 18 respectively of the element
Calculate the percentage of these 2 isotopes present in the
element

Chandra Prakash · Accepted Answer

Let the percentage
of isotope X-16 = x

The percentage of
isotope X-18 = 100-x

Relative atomic
mass = 16 2

Formula: Relative
atomic mass =

Putting the value
of parameter in above formula

16 2 = [16x +
18(100-x)] /100

The value of x is
90

Therefore
percentage of isotope of mass no 16 is 90%, while for isotope-18 is
10%

. Relative atomic mass of an element A is 16.2.There are 2 isotopes with mass no.16 and 18 respectively of the element. Calculate the percentage of these 2 isotopes present in the element.