An element 'X' has two series with atomic masses 42 and 44.If their percentage abundance in nature is 60% and 40 % respectively then find it's average atomic mass
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hello everybody solve it
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x=2%
Explanation:
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Chemistry
Structure of Atom
Isobars and Isotopes
An element X have three iso...
CHEMISTRY
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Asked on December 20, 2019 by
Mona Bangale
An element X have three isotopes X
20
,X
21
and X
22
. The percentage abundance of X
20
is 90% and its average atomic mass of elements is 20.18. The percentage abundance of X
21
should be ______________.
MEDIUM
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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%
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