Q.

Statement 1: Total number of octahedral voids present in unit cell of cubic close packing including the one that is present at the body center, is four.Statement 2: Besides the body center there is one octahedral void present at the center of each of the six faces of the unit cell and each of which is shared between two adjacent unit cells.

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a

Both statements 1 and 2 are correct

b

Both statements 1 and 2 are incorrect

c

Statement 1 is correct and statement 2 is incorrect

d

Statement 1 is incorrect and statement 2 is correct

answer is C.

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Detailed Solution

Since, octahedral void present at body center contribute 1 void while voids present at each edge contribute 1/4 hence total number of octahedral void can be calculated asnumber of octahedral void =1/4×12+1=4.
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