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A cubic solid is made of two elements P ...

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 ?

Text Solution

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The contribution of atoms Q present in 8 corners of the cube = `(1)/(8) xx 8 = 1`
The contribution atoms P present at the body centre = 1
Therefore ratio of P and Q = `1 : 1`
So , the formula of the compound is PQ .
Co-ordination number of atoms P and Q = 8 .
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