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Arrange H2O, H2S and H2Se in decreasing ...

Arrange `H_2O, H_2S` and `H_2Se` in decreasing order of acid strength?

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. Express 2061 in roman numbers.

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

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

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

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

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  6. Express 2062 in roman numbers.

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  7. Give hybridization and draw structure of XeF4.

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

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

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

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

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  12. Why is helium used in diving apparatus?

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

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

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

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  16. Write the four oxoacids of chlorine. Explain their relative acidic cha...

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  17. Explain the chemistry of manufacture of nitric acid by Ostwald’s proce...

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  18. Complete the following chemical equation : Ca3P2(s) + H2O (l) rarr .....

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  19. Complete the following chemical equation : F2(g)+ H2O(l) rarr ...........

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  20. Complete the following equation : Ca3 (PO4)2 + SiO2 + C rarr

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