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JEE Main 201322 AprilOnline
Exam
JEE Main
Year
2013
Date
22 April
Mode
Online
Subject
Chemistry
Chapter
Solid State

JEE Main 2013 · 22 April · Online · Chemistry · Solid State

Which one of the following statements about packing in solids is...

Which one of the following statements about packing in solids is incorrect ?

Options

  1. ACoordination number in bcc mode of packing is 8 .
  2. BCoordination number in hep mode of packing is 12 .
  3. CVoid space in hcp mode of packing is 32%32 \%.
  4. DVoid space in ccp mode of packing is 26%26 \%.

Correct answer

C. Void space in hcp mode of packing is 32%32 \%.

Step-by-step solution

The hcph c p arrangement of atoms occupies 74%74 \% of the available space and thus has 26%26 \% vacant space.
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