6. In an ionie crystalline solid atoms of
element Y form hcp lattice. The atoms
of element X occupy one third of
tetrahedral voids. What is the formula.
of the compound ? X2Y2
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Answer:
the formula of the compound is x2 y3
Explanation:
the number of atoms in hcp lattice = y = 6
as we know that number of tetrahedral voids = 2 n
where n = number of atoms in that lattice
in hcp lattice the number of tetrahedral voids = 2 x 6 = 12
number of atoms of element x = 1/3 x 12 = 4
the formula of the compound is = x4y6
on simplification we get x2y3
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