KCET2014ChemistryIonic Equilibrium
A crystalline solid ( X Y₃ ) has ccp arrangement for its element ( Y . X ) occupies
Options
- A( 33 % ) of tetrahedral voids
- B( 33 % ) of octahedral voids
- C( 66 % ) of tetrahedral voids
- D( 66 % ) of octahedral voids
Correct answer
B. ( 33 % ) of octahedral voids
Step-by-step solution
( X Y₃ ) has ccp arrangement for element ( Y, X ) occupies ( 33 % ) octahedral voids. In case of close packed arrangement there is one octahedral and two tetrahedral voids corresponding to each atom constituting the lattice. Atom ( Y ) adopt ccp arrangement and there are ( 2 ) tetrahedral sites per atom of ( Y ). Atom ( X ) occupies one octahedral void corresponding to each atom constituting the lattice. Total there are ( 3 ) voids In ( % ) occupies ( 1 3 100 % ) octahedral voids ( =33.33 % ) octahedral voids.