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How many lattice points are there in one unit cell of each of the following lattice ? (i) Face - centred cubic "" (ii) Face-centred tetragonal "" (iii) Body-centered |
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Answer» SOLUTION :(i) Lasttice point in face-CENTRED cubic lattice = 8(at corners) + 6(at the face CENTRE) = 14 (ii) Face centred tetragonal = 8(at corners) + 6(at the face centre) = 14 (iii). Lattice points in BODY-centred cube = 8(at corners) + 1 (at the body centre) = 9. |
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