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When molten zinc is cooled to solid stat...

When molten zinc is cooled to solid state, it assumes HCP structure. Then the number of nearest neightbours of zinc atom will be

A

4

B

8

C

6

D

12

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The correct Answer is:
D
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AAKASH SERIES-SOLID STATE-OBJECTIVE EXERCISE -2
  1. In a compound XY(2)O(4), oxide ions are arran­ged in CCP and cations X...

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  2. A cubic solid A^(+)B^(-) has the B^(-) ions arranged as below. If the ...

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  3. When molten zinc is cooled to solid state, it assumes HCP structure. T...

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  4. Sodium crystallizes in a bcc lattice, hence the coordination number of...

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  5. 26% void space in its crystal structure is obsered for A) FCC struct...

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  6. In modern periodic table, the position of the element with atomic numb...

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  7. In a hexagonal closest packing in two layers one above the other, the ...

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  8. If the radius of K^(+) and F^(-) are 133 pm and 136 pm respectively, t...

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  9. A metal has bcc structure and the edge length of its unit cell is 3.04...

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  10. In a metal oxide, oxide ions are arranged in hep array and the metal i...

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  11. The density of chromium is 7.2 gm cm^(3) and crystallises in a body - ...

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  12. Solid AB has the NaCZ structure. Atom A occupy the corners of the cubi...

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  13. In a solid AB having the NaCZ structure. ‘A’ atoms occupy the corners ...

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  14. A Binary solid has rocksalt structure The edge length is 400 pm and th...

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  15. In a crystalline solid, anions B are arranged in ccp lattice and catio...

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  16. The percentage of void space of a metallic element crystallising in a ...

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  17. A compound contains elements X and Y. Y atoms form CCP lattice and ato...

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  18. In a Face centered Cubic lattice, the packing fraction is

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  19. In a face centred cubic arrangement of A and B atoms whose A atoms are...

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  20. The number of atoms in HCP unit cell is

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