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Which of the following is correct-...

Which of the following is correct-

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Verified by Experts

The correct Answer is:
C
Rhombohedral crystal system-
`a = b = c, alpha = beta = gamma ne 90^(@)`
eg. `-NaNO_(3), CaSO_(4)`, calcite `CaCO_(3), HgS`
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    • ERRORLESS-SOLID STATE-NCERT BASED QUESTIONS (CRYSTALLOGRAPHY AND LATTICE)
    1. Which of the following is correct-

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    2. How many space lattices are obtainable from the different crystal syst...

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    3. Example of unit cell with crystallographic dimensions anebnec,alpha=ga...

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    4. The number of close neighbours in a body-centred cubic unti cell of mo...

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    5. Na and Mg crystallize in bcc- and fcc-type crystals, respectively, the...

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    6. Potassium fluoride has NaCI type structure .What is the distance betwe...

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    7. Which of the following hasno rotation of symmetry ?

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    8. The lattice site in a pure crystal cannot be occupied by :

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    9. The correct statement in the following is-

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    10. The maximum ra dius of sphere that can be fitted in the octahedral hol...

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    11. For tetrahedral coordination number, the radius ratio (r(c^(+)))/(r(a^...

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    12. The number of next nearest neighbours around each particle in face-cen...

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    13. If 'a' stands for the edge length of the cubic systems: simple cubic,b...

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    14. An fcc unit cell of aluminium contains the equivalent of how many atom...

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    15. Nickle crystallise in a fcc unit cell with a cell edge length of 0.352...

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    16. Potassium crystallizes with a

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    17. The molecule having three fold axis of symmetry is :

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    18. The edge lengths of the unit cells in terms of the radius of spheres c...

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    19. Space lattice of CaF(2) is

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