6. In a simple orthorhombic system two lattice points are connected through the translation vector T=2a+3b+4c,...

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6. In a simple orthorhombic system two lattice points are connected through the translation vector T=2a+3b+4c, where a=2Å, b=3Å and c=4Å. Determine the direction of the translation vector. [3] 7. The distance between (111) planes in a face centred crystal is 2Å. Determine the lattice parameter and atomic diameter. [3] 6. In a simple orthorhombic system two lattice points are connected through the translation vector T=2a+3b+4c, where a=2Å, b=3Å and c=4Å. Determine the direction of the translation vector. [3] 7. The distance between (111) planes in a face centred crystal is 2Å. Determine the lattice parameter and atomic diameter. [3]