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PH3 has lower boiling point than NH3. Wh...

`PH_3` has lower boiling point than `NH_3`. Why?

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ASSAM ACADEMIC CENTRE-The p-Block Elements-Example
  1. Write the reaction of thermal decomposition of sodium azide.

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  2. What happens when, concentrated H2SO4 is added to calcium fluoride.

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  3. PH3 has lower boiling point than NH3. Why?

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

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

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  6. Present a comparative account of the following: Bond angle of H2O and ...

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  7. Present a comparative account of the following: Electron affinities of...

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  8. Why is helium used in inflating aeroplane tyres?

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  9. Name the noble gas which is radioactive.

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  10. Answer the following: Which reaction was used by Bartlett to prepare t...

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  11. Name the noble gas which is most abundant in atmosphere.

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  12. What happens when SO3 is passed through water?

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

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  14. Arrange the following groups of substances in the order of the propert...

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  15. Arrange the following in increasing order if acid strength: HCl, HI, H...

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  16. What happens when ammonium nitrate is heated?

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  17. Name the noble gas that forms majority of the known noble gas compound...

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  18. HF is not stored in glass bottles but is kept in wax bottles. Why?

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  19. Why do some metals occurs in the native state?

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  20. Answer the following: Which reaction was used by Bartlett to prepare t...

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