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On heating a crystal of KCl in potassium...

On heating a crystal of KCl in potassium vapours, the crystal start exhibiting a violet colour. Why?

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R G PUBLICATION-THE SOLID STATE-EXERCISE
  1. What is doping?

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  2. Which point defects in the crystal unit increases the density of solid...

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  3. On heating a crystal of KCl in potassium vapours, the crystal start ex...

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  4. A compound is formed by two elements M and N. The elements N forms ccp...

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  5. What type of stoichiometric defect is shown by NaCl?

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  6. Why does presence of excess of lithium makes LiCl crystal pink?

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  7. Classify each of the following as being either a p-type or an n-type s...

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  8. What type of magnetism is shown in the following alignment of magnetic...

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  9. What type of defect is obtained when AgCl is doped with CdCl2?

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  10. What type of defect can arise when a solid heated?

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  11. What are p-type semi-conductor?

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  12. Some of the glass objects recovered from ancient monuments look milky ...

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  13. How solids are catagorised? Given one example of each.

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  14. What is crystal lattice? Write two characteristics of crystal lattice.

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  15. A compound is formed by two types of ions viz. A (as cation) & B (as a...

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  16. Show that in ccp and hcp structure the packing efficiency is 74%.

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  17. Analysis shows that nickel oxide has the formula Ni(0.98)O(1.00). What...

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  18. Explain the phenomenon "When molten NaCl is crystallised with SrCl2".

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  19. In terms of band theory, what is the difference between a conductor an...

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

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