Question

which of the three types of packing used by metalsmakes the most efficient use of space and which makes the least efficient?
answer in one sentence​

Answer 1

Answer:

Explanation:

Close packing is maximum in the crystal lattice of Face Centered cubic (FCC) unit cell and it is minimum in the crystal lattice of Simple Cubic unit cell.

- In the crystal lattice of Face Centered cubic (FCC) unit cell {or we can say cubic close packing (ccp)} the packing efficiency is 74 %.

- In the crystal lattice of Simple Cubic unit cell, the packing efficiency is 52.4%. - In the crystal lattice of Body Centred cubic unit cell, the packing efficiency is 68%.