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In spinel, Mg^(2+) is present in one-eig...

In spinel, `Mg^(2+)` is present in one-eighth of `TVs` in an fcc lattice of oxide ions and `Al^(3+)` ions are present in half of the `OVs`. The Formula of spinel is

A

`MgAl_(3)O_(3)`

B

`MgAl_(2)O_(3)`

C

`MgAl_(2)O_(4)`

D

`MgAl_(3)O_(4)`

Text Solution

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The correct Answer is:
C
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CENGAGE CHEMISTRY-SOLID STATE-Ex 1.1 (Objective)
  1. Which of following statements is correct in the zinc-blende-type struc...

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  2. In a body-centred cubic unit cell of closest packed atoms, the radius ...

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  3. Which of the following expressions is correct in the case of a sodium ...

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  4. In silicon crystal, Si atoms from fcc arrangement where 4 out 8 TVs ar...

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  5. Which of the following crystal systems exist in bc, end-centred, fc, a...

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  6. In a cubic,A atoms are present on alternative corners, B atoms are pre...

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  7. The fraction of octahedral voids filled by Al^(3+) ion in Al(2)O(3)(r(...

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  8. In the closest packing atoms, there are

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  9. Which of the following statement si correct for the body-centred cubic...

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  10. Aluminium metal has a density of 2.72 g cm^(-3) and crystallizes in a ...

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  11. If atoms are removed from half of the edge-centred OV(s) in RbBr, then...

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  12. ThO(2) exists in fluorite structure, what is the effective numver of b...

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  13. What is the coordination number of Th^(4+) in ThO(2)?

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  14. The coordination number Cs and Br in CsBr are, respectively,

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  15. The fraction of total volume occupied by atoms in a simple cube is

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  16. Xenon crystallises in face - centered cubic , and the edge of the unit...

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  17. In BeO (zinc blende structure), Mg^(2+) is introduced in available TV ...

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  18. If the ions are removed from a single body diagonal in above case afte...

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  19. In spinel, Mg^(2+) is present in one-eighth of TVs in an fcc lattice o...

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