In the unit cell of CaF 2 ,half of the tetrahedral holes are occupied by F - ions.

Question

Quizplus · Accepted Answer

The unit cell of CaF₂ has a face-centered cubic crystal structure. In this structure, there are two types of voids or holes: tetrahedral holes and octahedral holes. The statement in the question only mentions the occupation of half of the tetrahedral holes, but it does not provide any information about the occupancy of the octahedral holes. Therefore, it is not possible to determine whether the statement is true or false.

In the Unit Cell of CaF2,half of the Tetrahedral Holes

In the Unit Cell of CaF₂,half of the Tetrahedral Holes