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In the closet packing of atoms, there ar...

In the closet packing of atoms, there are:

A

One tetrahedral voids and two octahedral voids per atom

B

Two tetrahedral voids and one octahedral void per atom

C

Two of each tetrahedral and octahedral voids per atom

D

One of the each tetrahedral and octahedral void per atom

Text Solution

Verified by Experts

The correct Answer is:
B
In a closest packing of atoms (e.g., `fcc` or `ccp`), there are `4` atoms at lattice point and `8 TV_(s)//"unit cell"`
or `8/4 = 2TVs//"atom"`
or `(4)/(4) = 1 "OV"//"atoms"`
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CENGAGE CHEMISTRY ENGLISH-SOLID STATE-Ex 1.1 (Objective)
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  2. In the body centered cubic unit cell and simple unit cell, the radius...

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

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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 bcc, end-centred, fcc,...

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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 closet packing of atoms, there are:

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  9. Which of the following statements is correct in the body centred type ...

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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 number 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 the total volume occupied by the atoms present in a si...

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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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