COMEDK · Chemistry · 16. Solid State
Copper has face centred structure with edge length equal to \(361\text{ pm}\). The radius is
- A \(160.5 \mathrm{~pm}\)
- B \(64 \mathrm{~pm}\)
- C \(127.6 \mathrm{~pm}\)
- D \(180.5 \mathrm{~pm}\)
Answer & Solution
Correct Answer
(C) \(127.6 \mathrm{~pm}\)
Step-by-step Solution
Detailed explanation
For FCC: \(4r = \sqrt{2}\ a \Rightarrow r = \dfrac{a}{2\sqrt{2}} = \dfrac{361}{2\sqrt{2}} = \dfrac{361}{2.828} \approx 127.6\) pm
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