Statement I: In a closest packed structure, the number of tetrahedral voids is twice the number of atoms present. Statement II: Tetrahedral voids are located above each atom in the first layer and bel

Question

Statement I: In a closest packed structure, the number of tetrahedral voids is twice the number of atoms present. Statement II: Tetrahedral voids are located above each atom in the first layer and below each atom in the second layer.

Prashant Kotian · Accepted Answer

Correct answer: A. Statement I is correct: for N atoms, there are 2N tetrahedral voids. Statement II is also correct: each atom in a layer has a tetrahedral void directly above it and one directly below it, which explains why the number of tetrahedral voids is exactly twice the number of atoms.

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