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Answer the following in brief. Cu crystallizes in fcc unit cell with edge length of 495 pm. What is the radius of Cu atom? - Chemistry

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Short Note

Answer the following in brief.

Cu crystallizes in fcc unit cell with edge length of 495 pm. What is the radius of Cu atom?

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Solution

Given: Type of unit cell is fcc.
Edge length of unit cell (a) = 495 pm

To find: Radius of Cu atom (r)

Formula: For fcc unit cell, r = 0.3535 a

Calculation: Using formula,

r = 0.3535 a

= 0.3535 × 495 pm = 175 pm

Radius of Cu atom (r) is 175 pm.

Concept: Packing Efficiency
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Balbharati Chemistry 12th Standard HSC for Maharashtra State Board
Chapter 1 Solid State
Exercises | Q 3.09 | Page 27
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