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NEET UG CHEMISTRY MCQ: SOLID STATE

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Assertion (A): In NaCl{NaCl} crystal each Na+{Na}^{+}ion is touching 6 Clβˆ’6 \, {Cl}^{-}ions but these Clβˆ’{Cl}^{-}ions do not touch each other.

Reason (R): The radius ratio is greater than 0.414 required for exact fitting.
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Correct option: A
Both (A) and (R) are correct and (R) is the correct explanation of (A)
Option A is correct because in NaCl, each Na+Na^+ ion is surrounded by 6 Clβˆ’Cl^- ions, and the radius ratio is greater than 0.414, preventing the Clβˆ’Cl^- ions from touching each other.

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