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InterviewSolution
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A compound alloy of gold and copper crystallizes in a cube lattice in which the gold atoms occupy the lattice points at the corners of a cube and the copper atoms occupy the centres of each of the cube faces. Determine the formula of this compound. |
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Answer» SOLUTION :One-eighth of each corner atom (Au) and one-half of each face-centred atom (CU) are CONTAINED within the UNIT cell of the compound. Thus, number of Au atoms per unit cell =`=8 xx 1/8` and number of Cu atoms per unit cell =`6 xx 1/2=3`. The FORMULA of the compound is `AuCu_(3)`. |
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