MHT CET · Chemistry · Solid State
What is atomic radius of an element if it crystallises in BCC structure with edge length of unit cell 287 pm ?
- A 124 pm
- B 131 pm
- C 137 pm
- D 174 pm
Answer & Solution
Correct Answer
(A) 124 pm
Step-by-step Solution
Detailed explanation
For bec unit cell, \(4 r=\sqrt{3} a\)
\(\therefore \quad r=\frac{\sqrt{3}}{4} a=\frac{1.732 \times 287}{4}=124 \mathrm{pm}\)
\(\therefore \quad r=\frac{\sqrt{3}}{4} a=\frac{1.732 \times 287}{4}=124 \mathrm{pm}\)
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