Home NCERT Solutions NCERT Exemplar CBSE Sample Papers NCERT Books Class 12 Class 10
Question 11

The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes 168 X and 188 X in the sample?


Given, the normal atomicr mass of an example of a component X is 16.2u.
Two isotopes of component =   _{8}^{16}\textrm{X} and  _{8}^{18}\textrm{X}
Presently, Let's percent of isotope  _{8}^{16}\textrm{X} be x and percent of  _{8}^{18}\textrm{X} be 100 - x
In this way, According to the inquiry,

Average Atomic Mass :






Subsequently the level of isotope _{8}^{16}\textrm{X}  is 90 % and the percentage isotope  _{8}^{16}\textrm{X} is 10%.

Popular Questions of Class 9 Science

Recently Viewed Questions of Class 9 Science

Write a Comment: