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

A cubic solid is made up of two elements P and Q. Atom Q is present at corners of the cube and atom 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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Number of Q atoms per unit cell `= 1//8 xx8=1`
Number of P atoms per unit cell `=1xx1=1 `
Ratio of atoms P:Q=1:1
Hence, the formula of the compound is PQ.
As it is a bcc lattice therefore, coordination number is 8 for both P and Q.
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