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Answer the following Why does fluorine...

Answer the following
Why does fluorine not show variable valency?

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PATHFINDER-P-BLOCK ELEMENTS-QUESTION BANK
  1. Discuss the Haber's process for manufacture of ammonia.

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  2. Ammonia is a good complexing agent why?

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  3. Account for the following Only heavier members of group 18 from compo...

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  4. Account for the following Fluorine is a stronger oxidizing agent than...

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  5. Account for the following SF6 is not easily hydrolysed whereas SF4 is

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  6. Answer the following CIF3 exists but FCl3 does not exist why?

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  7. Why the bond dissociation enthalpy of F2 is less than that of Cl2.

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  8. Answer the following Why do noble gases have comparatively large ato...

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  9. Answer the following Why is a mixture of helium and oxygen gas prefe...

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  10. Answer the following Why does fluorine not show variable valency?

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  11. How is oxygen prepared in the laboratory?

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  12. How is ozone prepared?

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  13. Why is ozone a good oxidising agent?

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  14. How is oxygen different from rest of the group members?

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  15. Sulphur in vapour state exhibits paramagnetic behaviour.

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  16. Why is H2S acidic whereas H2O is neutral?

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  17. Sulphur hexafluoride is used as a gaseous electrical insulator .why?

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  18. Sulphur exhibits greater tendency for catenation than selenium.why?

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  19. Explain why the catenation property of sulphur is higher than that of ...

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  20. SCl6 is not known but SF6 exists why?

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