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AIIMS 2016
Exam
AIIMS
Year
2016
Subject
Chemistry
Chapter
Solid State

AIIMS 2016 · Chemistry · Solid State

If an atom crystallises in b c c lattice with r=4 Å then the edge...

If an atom crystallises in bccb c c lattice with r=4A˚r=4 Å then the edge length will be

Options

  1. A2A˚2 Å
  2. B8A˚8 Å
  3. C2.39A˚2.39 Å
  4. D9.23A˚9.23 Å

Correct answer

D. 9.23A˚9.23 Å

Step-by-step solution

For bccb c c lattice, a=4r3a=\frac{4 r}{\sqrt{3}} ⇒a=43×4=9.23A˚\Rightarrow \quad a=\frac{4}{\sqrt{3}} \times 4=9.23 Å
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