Which of the following statement is not correct?

Which of the following statement is not correct?
  1. Packing efficiency of hcp and ccp lattices are identical
  2. Packing efficiency of fcc lattice $>$ Packing efficiency of ccp lattice
  3. Packing efficiency of fcc lattice $=$ Packing efficiency of ccp lattice
  4. Packing efficiency of hcp lattice $=$ Packing efficiency of fcc lattice

Solution

Face centred cubic packing (fcc) and cubic close packing (cсp) has same packing efficiency.

Asked in: AP EAMCET 2022 (06 Jul Shift 1)

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