An element exist in three isotopic forms 15A, 17A and 18A. If the
percentage abundance of heaviest and lightest isotope are 40%
and 10% respectively then the average atomic mass of the
element is
Answers
Answered by
1
Answer:
Average atomic mass =
100
∑% abundance × A.M
20.18=
100
20×90+x×21+(10−x)22
2018=1800+21x+220−22x
x=2020−2018
x=2%
Answered by
1
15+17+18=50
50/3
=16.8
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