Question : Which of the following lattices has the highest packing efficiency –

  1. simple cubic lattice
  2. body-centred cubic lattice (BCC)
  3. hexagonal close-packed lattice (HCP)

Key point to answer this question :  Remember the packing efficiency of all lattices asked in our question which are simple cubic , BCC and HCP lattice. then you can easily crake the question in seconds.

simple cubic has the packing efficiency = 52.4%

body-centred cubic lattice (BCC) has the packing efficiency = 68%

hexagonal close-packed lattice (HCP) has the packing efficiency = 74%

solution :  After seeing the data of packing efficiencies in given lattices , we can say that hexagonal close-packed lattice (HCP) has the highest packing efficiency that is 74%

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