JEE Main 2022 Chemistry question
Not in JEE Main or NEET syllabus
Atoms of element X form hcp lattice and those of element Y occupy 2/3 of its tetrahedral voids. The percentage of element X in the lattice is . (Nearest integer)
Answer: 43
Solution
In an hcp unit cell there are 6 atoms of X and 12 tetrahedral voids. Y occupies (2/3)
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