In a F.C.C. lattice, atom X occupies the corner positions and atom Y occupies face centred positions. If all the atoms are missing from one of the face diagonal, the formula of the compound is
A
X2B5
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B
X3Y10
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C
XY2
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D
X2Y3
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Solution
The correct option is BX3Y10 If all the atoms are missing from one of the face diagonal, 2 atoms of X and 1 atom Y would be missing X68Y52;X0.75Y2.5X0.75×4Y2.5×4;X3Y10