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NEET 2010
Exam
NEET
Year
2010
Subject
Chemistry
Chapter
Solid State

NEET 2010 · Chemistry · Solid State

A B crystallizes in a body centred cubic lattice with edge length '...

ABA B crystallizes in a body centred cubic lattice with edge length ' aa ' equal to 387pm387 \mathrm{pm}. The distance between two oppositively charged ions in the lattice is

Options

  1. A335pm335 \mathrm{pm}
  2. B250pm250 \mathrm{pm}
  3. C200pm200 \mathrm{pm}
  4. D300pm300 \mathrm{pm}

Correct answer

A. 335pm335 \mathrm{pm}

Step-by-step solution

For body centred cubic (bcc) lattice, distance between two oppositely charged ions, d=3a2=3×3872pm=335.15pm\begin{aligned}\mathrm{d}& =\frac{\sqrt{3} \mathrm{a}}{2}=\frac{\sqrt{3} \times 387}{2} \mathrm{pm}\\ & =335.15 \mathrm{pm} \end{aligned}
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