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At the limiting value of radius ration (...

At the limiting value of radius ration `(r^+)/(r^-)`

A

Force of attraction are larger than the forces of repulsion

B

Forces of attraction are smaller than the forces of repulsion

C

Forces of attraction and repulsion are just equal

D

None of these

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The correct Answer is:
C
At the limiting value of radius ratio `(r^+/r^-)`, the forces of attraction and repulsion are just equal .
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SOLID STATE-EXERCISE 1
  1. Match the following Choose the correct option

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  2. What is the coordination number of each atom in a hexagonal close-pack...

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  3. At the limiting value of radius ration (r^+)/(r^-)

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  4. The NaCl structure can be converted into CsCl structure

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  5. If the crystallises in zinc blende structure with I^- ions at lattice ...

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  6. In which pair most efficient packing is present?

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  7. In which of the following packing 74% space is occupied by the atoms w...

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  8. When the centres of the four immediate neighbouring spheres are joine...

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  9. If the number of close packed sphere be N, then the number of octahedr...

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  10. While placing the second layer over that first layer , if the sphere o...

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  11. In an antiflourite structure, cations occupy

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  12. The numbers of tetrahedral and octahedral holes in a ccp array of 100 ...

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  13. The total number of octahedral void (s) per atom present in a cubic cl...

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  14. Total no. of voids in 0.5 mole of a compound forming hexagonal closed ...

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  15. Point out the correct statement for the set of characteristics of ZnS ...

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  16. In which of the following crystals, alternate tetrahedral voids are oc...

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  17. The ionic radii of Rb^(+) and I^(-) are 1.46 and 2.16Å. The most proba...

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  18. A solid is formed by two elements P and Q . The element Q forms cubic ...

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  19. Match the following

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  20. The cubic unit cell of a metal (molar mass= 63.55 "mol"^(-1)) has an e...

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