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Grade: 11

 A solid crystal is composed of X, Y and Z atoms. Y atoms are occupying 50% of octahedral voids, where as X atoms are occupying the 100% tetrahedral void with Z atoms in ccp array arrangement, then the rational formula of the compound in the given crystal is 

                        (A) X8Y2Z4                                             (B) X5Y10Z8 

                        (C) X4YZ2                                              (D) X16Y4Z8

6 years ago

Answers : (1)

Sher Mohammad
IIT Delhi
askIITians Faculty
174 Points
							Z atoms are in ccp array so no of Z atoms=4
no of octahedral voids=4
no of tetrahedral voids=8
so no of Y atoms=2
no of X atoms=8
so formula X8Y2Z4 that means X4YZ2 correct answer is C

Sher mohammad
Faculty askiitians
6 years ago
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