Verified Solution • 2025–26 Session moderate

QJEEM10Cheddf: JEE Main 2010 Chemistry - Class 12 JEEM10Cheddf Solution: Percentages of free space in cubic close packed structure and…

Percentages of free space in cubic close packed structure and in body centred packed structure are respectively :

Multiple Choice Options

  • A 30% and 26%
  • B 26% and 32%
  • C 32% and 48%
  • D 48% and 26%

Step-by-Step Verified Solution

Packing fraction is defined as the ratio of the volume of the unit cell that is occupied by the spheres to the volume of the unit cell.

P.F. for cpp and bcc are 0.74 and 0.68 respectively.

So, the free space in ccp and bcc are 26% & 32% respectively.

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