A solid is made up of two elements P and Q. Atoms Q are in ccp arrangement while atoms P occupy all the tetrahedral sites. What is the formula of the compound ?

A solid is made up of two elements P and Q. Atoms Q are in ccp arrange

1.	A solid is made up of two elements P and Q. Atoms Q are in ccp arrangement while atoms P occupy all the tetrahedral sites. What is the formula of the compound ?
Answer» Solution :SUPPOSE number of ATOMS Q=N Then number of tetrahedral sites =2 n `THEREFORE` Number of atoms P=2n `therefore` Ratio P:Q=2n:n =2 :1 , i.e., FORMULA is `P_2Q`