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Copper crystallizes in a face-centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in picometers? A 108 B 128 C 157 D 181

Copper crystallizes in a face-centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in picometers?

A

108

B

128

C

157

D

181

Grade:12

1 Answers

ankit singh
askIITians Faculty 614 Points
3 years ago

For FCC , 2a=4r,

 
 r=42​a​=42​×361​
 
     =128 pm.
 
Hence, the correct answer is option B.
that is answer hope u undersatand

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