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The first ionisation enthalpy of nitroge...

The first ionisation enthalpy of nitrogen is higher than that of oxygen but the second ionisation enthalpy is higher in oxygen than that of nitrogen. Explain

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. Write any two uses of inert gases.

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  2. State the hybridisation of the central atom and draw the structure of ...

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  3. The first ionisation enthalpy of nitrogen is higher than that of oxyge...

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  4. Give the laboratory preparation of sulphur dioxide and write the chemi...

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  5. SF4 is easily hydrolysed whereas SF6 is not easily hydrolysed. Why ?

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  6. Although electron gain enthalpy of fluorine is less negative as compar...

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  7. Dry chlorine does not act as a bleaching agent. Why?

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  8. Why is H3PO4 tribasic and H3PO3 dibasic?

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  9. Why ICI is more reactive than I2 ?

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  10. Nitrogen exists as diatomic molecule and phosphorus as P4. Why ?

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  11. Describe the manufacture of H2SO4 by contact process?

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  12. Give reasons for the following: Chlorine has higher electron gain enth...

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  13. Give reasons for the following: Noble gases have very little tendency ...

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  14. Give reasons for the following: Elements of group 16 are more electron...

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  15. Though nitrogen exhibits + 5 oxidation state, it does not form penta-h...

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  16. Give reasons for the following: Sulphur vapour is paramagnetic.

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  17. Give reasons for the following: Moist chlorine is powerful bleaching a...

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  18. Describ chemistry of manufacture of ammonia by Haber's process and dis...

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  19. What are interhalogen compounds ? Give example.

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  20. What are noble gases? Why are they named so? Account for the fact that...

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