InterviewSolution
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InterviewSolution
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A mineral having the formula `XY_(2)` crystaillises in the cubic closed packed lattic with the A- atoms occupaying the lattice point .Fraction of the betradral sites occupired by B- atoms isA. `1.00`B. `0.52`C. `0.68`D. `0.74` |
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Answer» Correct Answer - a `AB_(2)` cryswtanllises as cubic packed (ccp) This `A^(2+)` is surrounded by edge `B^(-)` and `B` is surrounding by four `A^(2 +)` Thus coordination number of `A^(2+) = 8` Coordination number of `B^(-) = 4` Number of atoms as trtahoudral in small of unit of atoms `B= 4` Thus fraction occepaid `= (4)/(4) = 1 (100%)` |
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