Which of the following is correct when atoms are closely packed?

Options

A. The size of tetrahedral void is smaller than that of octahedral void
B. The size of tetrahedral void is greater than that of octahedral void
C. The size of tetrahedral void may be greater or smaller or equal to that of octahedral void depending upon the size of atoms
D. The size of tetrahedral void is equal to that of octahedral void

Answer

A

Explanation

For a given radius of anion, radius for octahedral void and tetrahedral void is as follows
`((r_(+))/(r_(-)))_(OV) gt ((r_(+))/(r_(-)))_(TV)` `(("For "OV,(r_(+))/(r_(-))=0.414-0.732),("For "TV,(r_(+))/(r_(-))=0.225-0.414))`