In which pair most efficient packing in present?

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hcp and bcc

hcp and ccp

bcc and ccp

bcc and simple cubic cell

answer is B.

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Detailed Solution

Packing efficiency is the percentage of total filled space by particles and it can be calculated as packing efficiency =volume occupied by four spheres in the unit celltotal volume of unit cell×100Since, packing efficiency for hcp or ccp is calculated to be 74% which maximum among all type of crystals.

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