The number of atoms in HCP unit cell is _______.

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answer is 6.

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Detailed Solution

For HCP, Z = 6 No. of atoms in HCP unit cell
is. At the corner 12 X1/ 6= 2 . At the centre of
the hexagon = 2X1/ 2 = 1 . Between the
hexagons 3 X1 = 3 . Toal no. of atoms = 6.

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