NEET UG CHEMISTRY MCQ: SOLID STATE

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Analyzing +4 | -1

A compound of formula

{A_2}{B_3}

has the hcp lattice. Which atom forms the hcp lattice and what fraction of tetrahedral voids is occupied by the other atoms?

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Correct option: C

hcp lattice-

B

\frac{1}{3}

tetrahedral voids-

A

Option C (hcp lattice-

B

\frac{1}{3}

tetrahedral voids-

A

) is correct because in an hcp lattice, the number of atoms is 6, and the number of tetrahedral voids is 12. The formula

A_2B_3

implies that B forms the hcp lattice, and A occupies 1/3 of the tetrahedral voids.

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