Packing efficiency

Packing Fraction||Efficiency||Percentage OF void space||Coordination Number|| Description OF Cube|| Contribution OF Atom present at different location in a Cube||Class Illustrations with Short Tricks

In which pair most efficient packing is present?

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

The efficiency of packing in simple cubic unit cell is

The efficiency of packing in simple cubic unit cell is