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?

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No of atoms of Q in the unit cell .=1/8 xx 8=1 . No of atoms of .P. in the unit cell .=1. Formula of the compound is .P Q.. The C0ordination number of both .P. and .Q. is .8 ..

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