Statement I: In sodium chloride crystal, the Na+ ion occupies the octahedral void while Cl- ions occ — Solid State Chemistry Question
Question
Statement I: In sodium chloride crystal, the Na+ ion occupies the octahedral void while Cl- ions occupy the vertices of octahedron. Statement II: The radius ratio (r_Na+/r_Cl-) lies between 0.414 and 0.732.
Answer: A
💡 Solution & Explanation
Statement I is correct: in the $NaCl$ lattice, Na+ ions occupy octahedral voids, and the surrounding 6 Cl- ions form an octahedron around each Na+. Statement II is also correct: the radius ratio lies in the octahedral range of 0.414 to 0.732, which explains why Na+ occupies the octahedral voids.
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