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NEET levelSingle correct optionDifficulty 1 of 3ss075

In a close-packed structure of $N$ identical spheres, the number of tetrahedral voids is

A $N$
B $N /2$
C $4 N$
D $2 N$

Answer: D

Close packing has

N

octahedral voids and

2 N

tetrahedral voids for

N

spheres.

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