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Assertion : SF6 cannot be hydrolysed but...

Assertion : `SF_6` cannot be hydrolysed but `SF_4` can be. Reason : Six F atoms in `SF_6` prevent the attack of `H_2O` on sulphur atom of `SF_6`.

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. Assertion : Both rhombic and monoclinic sulphur exist as S8 but oxygen...

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  2. Assertion : NaCl reacts with concentrated H2SO4 to give colourless fum...

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  3. Assertion : SF6 cannot be hydrolysed but SF4 can be. Reason : Six F at...

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  4. Express 2060 in roman numbers.

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  5. Give the disproportionation reaction of H3PO3.

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  6. Express 2061 in roman numbers.

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  7. Name the halogen which forms only one oxoacid and write the formula of...

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  8. Arrange H2O, H2S and H2Se in decreasing order of acid strength?

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  9. Why does R3P=O exist but R3N=O does not? (R= alkyl group)

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  10. Comment on nature of two S-O bond formed in SO2 molecule. Are the two ...

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  11. Express 2062 in roman numbers.

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  12. Give hybridization and draw structure of XeF4.

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  13. Give reasons for the following : SF6 is not readily hydrolysed.

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

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  15. What are the interhalogen compounds ? Why are these more reactive than...

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  16. Considering the parameters such as bond dissociation enthalpy, electro...

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  17. Why is helium used in diving apparatus?

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  18. Account for the following : NH3 is a stronger base than PH3.

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  19. Sulphur exhibits greater tendency for catenation than seleniun. Explai...

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  20. How H(3)PO(3) is diprotic acid?

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