1.

If iron atom is available in the form of , say three isotopes ""_(25)^(54)"Fe", ""_(26)^(56)Fe and " "_(26)^(57)Fe and their proportion is 5% , 90% and 5% respectively. Calculate the average mass of iron atom.

Answer»

SOLUTION :The AVERAGE atomlc mass of IRON
`= (am + bn + cz)/((m + N + z))`
= `(54 xx 5 + 56 xx 90 + 57 xx 5)/(5 + 90 + 5 ) `
`= (270 + 5040 + 285 )/(100)`
= `(5595)/(100)`
= ` 55.95` u


Discussion

No Comment Found

Related InterviewSolutions