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Mention the basicity of H3PO3....

Mention the basicity of `H_3PO_3`.

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ASSAM ACADEMIC CENTRE-The p-Block Elements-Example
  1. In the brown ring test (for identification of NO3). Write the formula ...

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  2. Why is white phosphorous more reactive than red phosphorous?

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  3. Mention the basicity of H3PO3.

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  4. Why HNO2 behaves as oxidising as well as reducing agent?

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  5. SF6 is used as a gaseous electrical insulator. Explain.

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  6. H2S is less acidic than H2Te.Why?

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  7. Why are elements of 16 group called Chalcogen?

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  8. Why NO become brown when exposed in air?

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  9. Why does PCl3 fume in moisture?

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  10. Name the molecular geometry of XeOF4.

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  11. Write the structure of Pyrophosphoric acid, H4P2O7.

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  12. Write two uses of Selenium metal.

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  13. Why is bond angle of PH3 molecule lesser than in NH3 molecule?

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  14. Why is white phosphorous more reactive than red phosphorous?

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  15. Which one has higher electron gain enthalpy with negative sign, sulphu...

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  16. How will you account for the following: NF3 is an exothermic compound ...

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  17. How will you account for the following: Among the hydrides of group 16...

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  18. How will you account for the following: Bleaching of flowers by chlori...

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  19. How will you account for the following: NCl3 is readily hydrolysed whi...

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  20. H2S acts only as reducing agent while SO2 acts as an oxidising as well...

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