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10/09/2020 6:47 pm
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A cubic solid is made of two elements P and Q. Atoms of Q are at the corners of the cube and P at the body-centre. What is the formula of the compound? What are the coordination numbers of P and Q?
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10/09/2020 6:49 pm
Given, Atoms of Q occupy the corners of the cube.
=> Number of Q atoms in a unit cell = 8 x 1/8 = 1
The atom of P occupies the body centre.
=> Number of Q atoms in a unit cell = 1
Therefore, the ratio of the number of P atoms to the number of Q atoms; X : Y = 1 : 1
Thus the formula of the compound is PQ And the coordination number of both the elements is 8.