JEE Main & Advanced Physics Semiconducting Devices Hexagonal Close Packed (HCP) Structure

Hexagonal Close Packed (HCP) Structure

Category : JEE Main & Advanced

The HCP structure also maximizes the packing fraction

 

(1) \[a=b\ne c\]

(2) Number of atoms per unit cell = 6

(3) The volume of the hexagonal cell = \[3\sqrt{2}\,{{a}^{3}}\]

(4) The packing fraction \[=\frac{\pi \sqrt{2}}{6}\]

(5) Coordination number = 12

(6) Magnesium is a special example of HCP lattice structure.

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