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Account for the following: the acidic s...

Account for the following: the acidic strength of the hydrides of group 16 elements increases down the group.

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ASSAM ACADEMIC CENTRE-The p-Block Elements-Example
  1. Ammonia is a good complexing agent. Why?

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  2. Which is acidic hydride of nitrogen?

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  3. Account for the following: the acidic strength of the hydrides of gro...

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  4. What is the atomicity of sulphur?

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  5. Why are elements of 16 group called Chalcogen?

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  6. Covalency of oxygen never exceeds 2. Why?

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  7. What is Oleum?

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  8. Draw the structure of the following molecules and mention their shapes...

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  9. When HCI reacts with finely powdered iron, it forms ferrous chloride a...

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  10. Why fluorine is a powerful oxidising agent?

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  11. Give the hydrolysis reaction of TeF6.

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  12. Condition for maximum yield of SO3 gas from oxidation of SO3 gas is.

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  13. Nitrogen exists as diatomic molecule and phosphorous as P4.

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  14. Arrange the hydrides of group 16 in increasing order of acid strength

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  15. Account for the following: PCI5 behaves as an ionic compound is solid ...

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

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  17. In which one of the two structures NO2^(+) and NO2^(-) the bond angle ...

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  18. Why is the highest oxidation state of a metal exhibited in its oxide o...

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

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  20. Fluorine does not exhibit any positive oxidation state. Why?

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