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If the radius of the octaheral void is r...

If the radius of the octaheral void is `r` and the radius of the atoms in close-packing is `R`, derive relation between `r` and `R`

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`r = 0.414 R`
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MODERN PUBLICATION-SOLID STATE-CONCEPTUAL QUESTIONS 1
  1. A metal crystallizes in a body centred cubic structure. If 'a' is the ...

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  2. If the radius of the octaheral void is r and the radius of the atoms i...

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  3. In a close packing of N spheres, how many (i) tetrahedral , and (ii...

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  4. Which of the following lattices has the highest packing efficency (a) ...

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  5. What is meant by the term "coordination number"? b. What is the coor...

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  6. The ions of NaF and MgO have the same number of electrons and inter nu...

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  7. The most unsysmmetrical and symmeterical systems are, respectively:

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  8. How many atoms can be assigned to its unit cell if an element forms (i...

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  9. What is the maximum number of atoms in a hcp crystal structure of an e...

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  10. Which of the following network solids is an exceptionally good conduct...

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  11. How are unit cell and space lattice related ?

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  12. Pick out the odd ones from the following sets:（i) Sulphur, Argon, Soli...

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  13. What is the two-dimensional coordination number of a molecule in squar...

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  14. Solid A is a very hard electrical insulator in solid as well as in mol...

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  15. What type of solids are electrical conductors, malleable or ductile?

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  16. How may octahedral voids are present in 1 mole of a compound having cu...

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  17. What is the total number of atoms per unit cell in a face centred cubi...

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  19. A compound AB(2) possesses the CaF(2) type crystal structure. The c...

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  20. Ferric oxide crystalliizes in a hexagonal close-packed array of oxide ...

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