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The HNH angle is higher than HPH, HAsH a...

The HNH angle is higher than `HPH`, HAsH and HSbH angles - Why ?

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Can be explained on the basis of `sp_(3)` hybridisation in `NH_(3)` and only s–p bonding between hydrogen and other elements of the group.
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NCERT TELUGU-THE P-BLOCK ELEMENTS -Exercises
  1. Illustrate how copper metal can give different products on reaction wi...

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  2. Give the resonating structures of NO(2) and N(2)O(5).

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  3. The HNH angle is higher than HPH, HAsH and HSbH angles - Why ?

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  4. Why does R(3)P=O exist but R(3)B=O does not (R = alkyl group) ?

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  5. Explain why is NH(3) basic while "BiH"(3) is only feebly basic.

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  6. Nitrogen exists as diatomic molecule and phosphorus as P(4) - Why ?

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  7. Write the difference between the properties of white phosphorus and re...

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  8. Why does nitroggen show catenation properties less than phosphorus ?

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  9. Give the disproportionation reaction of H(3)PO(3).

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  10. Can PCl(5) act as an oxidising as well as a reducing agent? Justify.

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  11. Justify the placement of O, S, Se, Te and Po in the same group of the ...

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  12. Why is dioxygen a gas but sulphur a solid ?

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  13. Knowing the electron gain enthalpy values for O to O^(-) and O to O^(2...

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  14. Which aerosols deplete ozone?

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  15. Describe the manufacture of H(2)SO(4) by contact process.

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  16. How is SO(2) an air pollutant?

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  17. Why are halogens strong oxidising agents?

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  18. Explain why fluorine forms only one oxoacid, HOF.

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  19. Explain why inspite of nearly the same electronegativity, oxygen forms...

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  20. Write two uses of ClO(2).

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