JEE Main 2010 Chemistry question

Chemistry The Solid State JEE Main 2010

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

(1)30% and 26%
(2)26% and 32%Correct
(3)32% and 48%
(4)48% and 26%

Answer: (2)

Solution

Packing efficiency: ccp 74% (free space 26%), bcc 68% (free space 32%), option (2).

Question ID VK-039244