Naturally occuring silicon is amixture of three isotopes 28Si, 29Si, 30SI the relative mass of silicon is 28.1 what could be the relative abundance of each of the three isotopes?

1 Answer
Jun 30, 2018

We cannot calculate this on the given data...

Explanation:

The average atomic mass, i.e. the mass quoted on the Periodic Table, is the WEIGHTED average of the individual isotopic masses. We KNOW that the average atomic mass is 28.1amu...we DO NOT know the individual percentages of 28Si, 29Si, and 30Si. More data are needed for the question...