Hexagonal Closed Packing|Examples|One Dimensional Packing|HCP Arrangement|Packing Fraction|OMR

Hexagonal close packing is found in crystal lattice of

In hexagonal close packing of spherer in three dimensions.

Hexagonal closely packed| Cubicaly closely packed

Close packing in Crystal||1-D Close Packing

In hexagonal close packing of shpere in three dimesions, which of the following statements is correct.

Assertion: Hexagonal close packing in more light than cubic close packing. Reason: Hexagonal close packing has C.N of 12 whereas cubic close packing has C.N. of 8.

In hcp structure, the packing fraction is