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Question
Chemistry
Which one of the following statements about packing in solids is incorrect ?
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Q. Which one of the following statements about packing in solids is
incorrect
?
JEE Main
JEE Main 2013
The Solid State
A
Coordination number in bcc mode of packing is 8
5%
B
Coordination number in hcp mode of packing is 12
25%
C
Void space in hcp mode of packing is 32%
61%
D
Void space in ccp mode of packing is 26%
9%
Solution:
The hcp arrangement of atoms occupies 74% of the available space and thus has 26% vacant space.