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The Cu metal crystallises into fcc lattice with a unit cell edge length of 361 pm. The radius of Cu atom is:
The Cu metal crystallises into fcc lattice with a unit cell edge length of 361 pm. The radius of Cu atom is:
Updated On: Oct 29, 2024
- 127 pm
- 181 pm
- 157 pm
- 108 pm
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The Correct Option is C
Solution and Explanation
\(\text{In a face-centered cubic (fcc) lattice, the relation between the unit cell edge length } a \text{ and the atomic radius } r \text{ is:} \\ r = \frac{a}{2\sqrt{2}} \\ \text{Substituting } a = 361 \, \text{pm:} \\ r = \frac{361}{2\sqrt{2}} \approx 127 \, \text{pm}\)
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