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Calculate the no. of particles (atoms) per unit cell in a FCC crystal lattice: |
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Answer» Solution :(1) A face centre cube contains 8 lattice points at the eight corners and 6 lattice points at the centres of six faces. + (2) /A PARTICLE PRESENT at the corner SHARES 1/8 of that particle to each unit cell (3) A particle present at the centre of axx fxxa=ce provides a share of 1/2 of that particle to each unit cell. (4) The number of particles present in unit cell of fcc `=1/8xx8+1/2xx6=1+3=4` |
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