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NEET 2011
Exam
NEET
Year
2011
Subject
Chemistry
Chapter
Solid State

NEET 2011 · Chemistry · Solid State

A solid compound X Y has NaCl structure. If the radius of the...

A solid compound XYX Y has NaCl\mathrm{NaCl} structure. If the radius of the cation is 100pm100 \mathrm{pm}, the radius of the anion ( Y−Y^{-}) will be

Options

  1. A275.1pm275.1 \mathrm{pm}
  2. B322.5pm322.5 \mathrm{pm}
  3. C241.5pm241.5 \mathrm{pm}
  4. D165.7pm165.7 \mathrm{pm}

Correct answer

C. 241.5pm241.5 \mathrm{pm}

Step-by-step solution

Radius ratio of NaCl\mathrm{NaCl} like crystal =r+r−=0.414=\frac{r^{+}}{r^{-}}=0.414 or r−=1000.414=241.5pmr^{-}=\frac{100}{0.414}=241.5 \mathrm{pm}
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