Q1 of 26 Page 1

What is the formula of a compound in which the element P forms ccp lattice and atoms of Q occupy 2/3rd of tetrahedral voids?

Since, P forms ccp lattice, the no. of atoms of P =


= 4


No. of tetrahedral voids in lattice = 2 (no. of atoms of P)


= 2


Since, Q occupy 2/3rd of tetrahedral voids, then no. of atoms of Q = 8 =


Formula of compound =


= P3Q4


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