In which pair most efficient packing is present?

In which part most efficiency packing is present?

Which one of the following is the most efficient packing arrangement?

Which one is most efficient imbibant ?

Which one is most efficient imbibant ?

Which one is most efficient imbibant ?

The efficiency of packing is 68% in

Which of the three lattices scc, bcc, fcc has most efficient and least efficent packing of particles?

What do you mean by packing efficiency ? In which type of crystal arrangements packing efficiency is more ?