Question:

Which of the following metals does NOT have face-centered cubic (fcc) structure?

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Alkali metals generally crystallize in BCC structure at room temperature.
Updated On: Jun 29, 2026
  • Copper
  • Nickel
  • Silver
  • Sodium
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The Correct Option is D

Solution and Explanation

Concept: Crystal structures of metals: - FCC: Cu, Ni, Ag, Au - BCC: Na, K, Fe (at room temperature for some phases)

Step 1:
Identify structures.
Copper → FCC Nickel → FCC Silver → FCC

Step 2:
Check sodium.
Sodium is: \[ \text{BCC (body centered cubic)} \] Final Answer: \[ \boxed{\text{Sodium}} \]
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