NEET 2012
- Exam
- NEET
- Year
- 2012
- Subject
- Chemistry
- Chapter
- Solid State
NEET 2012 · Chemistry · Solid State
Structure of a mixed oxide is cubic close packed (ccp). The cubic...
Structure of a mixed oxide is cubic close packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One fourth of the tetrahedral voids are occupied by divalent metal and the octahedral voids are occupied by a monovalent metal . The formula of the oxide is
Options
- A
- B
- C
- D
Correct answer
D.
Step-by-step solution
According to ccp,
Number of ions
So, tetrahedral void
and octahedral void
Since, ions occupied th of tetrahedral void.
Number of ions
Again, ions occupied all octahedral void.
Number of ions
\therefore=A B_2 \mathrm{O}_2