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AIEEE 2008 Solved Paper
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© examsnet.com
Question : 17
Total: 104
In a compound atoms of element
Y
from ccp lattice and those of element
X
occupy
2
∕
3
rd of tetrahedral voids. The formula of the compound will be
X
4
Y
3
X
2
Y
3
X
2
Y
X
3
Y
4
Validate
Solution:
From the given data, we have
Number of
Y
atoms in a unit cell
=
4
Number of
X
atoms in a unit cell
=
8
×
2
3
=
16
3
From the above we get the formula of the compound
as
X
16
/
3
Y
4
or
X
4
Y
3
© examsnet.com
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