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Why are ionic solids conducting in the m...

Why are ionic solids conducting in the molten state and not in the solid state ?

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In the ionic solids, the electrical conductivity is due to the movement of the ions. Since the ionic mobility is negligible in the solid state, these are non-conducting in this state. Upon melting, the ions present acquire some mobility. Therefore, the ionic solids become conducting.
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DINESH PUBLICATION-SOLID STATE-N.C.E.R.T
  1. Classify the following solids in different categories based on the nat...

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  2. A solid substance 'A' is very hard and electrical insulator both in th...

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  3. Why are ionic solids conducting in the molten state and not in the sol...

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

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  5. Give the significance of "lattice point."

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  6. Name the parameters that characterized a unit cell.

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  7. Distinguish between a. Hexagonal and monoclinic unit cells (b) Fac...

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  8. Explain how much portin of an atom located at (a) corner and (b) body ...

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

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  10. A compound is formed hexagonal close-packed structure. What is the tot...

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  11. A compound formed by two elements M and N. Element N forms ccp and ato...

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

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  13. An element with molar mass 2.7 xx 10^(2) kg mol^(-1) forms a 2.7 xx 10...

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  14. What type of defect can arise when a solid is heated? Which physica...

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  15. What type of stoichiometric defect is shown by: (a) ZnS (b) AgBr

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  16. Explain how vacancies are introduced in an ionic solid when a cation ...

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  17. Ionic solids, which have anioninc vacancies due to metal excess defect...

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  18. A group-14 element is to be converted into n-type semiconductor by dop...

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  19. What type of substances would make better permanent magnets, ferromagn...

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  20. Define the term "amorphous". Give a few example of amorphous solids.

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