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PH(3) has lower boiling point that NH(3...

`PH_(3)` has lower boiling point that `NH_(3)`. Why ?

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Unlike `NH_(3)`, `PH_(3)` molecules are not associated through hydrogen bonding in liquid state. That is why the boiling point of `PH_(3)` is lower than `NH_(3)`.
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(a) Though nitrogen exhibits +5 oxidation state, it does not form pentahalide. Give reason. (b) PH_3 has lower boiling point than NH_3 . Why ?

Why does PH_(3) have lower boiling point than NH_(3) ?

Give reasons for the following: NH_(3) has higher boiling point than PH_(3) .

Which of the following observations can be explained on the basis of hydrogen bonding ? (i) H- F has higher boiling point than other halogen acids. (ii) H_(2) O has highest boiling point among hydrides of group 16 elements. (iii) NH_(3) has lower boiling point than PH_(3) .

(a) Given reasons for the following : (i) Bond enthalpy of F_2 is lower than that of Cl_2 . (ii) PH_3 has lower boiling point than NH_3 . (b) Draw the structures of the following molecules : (i) BrF_3 (ii) (HPO_3)_3 (iii) XeF_4

NH_(3) has higher boiling point than PH_(3) . Give reason.

NCERT-THE P-BLOCK ELEMENTS-EXERCISE
  1. PH(3) has lower boiling point that NH(3). Why ?

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  2. Why are pentahalides of P,As,Sb and Bi are more covalent than trihalid...

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  3. Why is BiH3 the strongest reducing agent amongst all the hydrides of g...

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  4. Why is N(2) less reactive at room temperature ?

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  5. Mention the conditions required to maximise the yield of ammonia.

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  6. How does ammonia react with a solution of Cu^(2+)?

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  7. What is the covalence of nitrogen in N2O5?

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  8. Bond angle in PH(4)^(+) is higher than that in PH(3).Why ?

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  9. What happens when white phosphorus is heated with concentrated NaOH so...

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  10. What happens when PCl(5) is heated?

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  11. Write a balanced equation for the reaction of PCl5 in heavy water.

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  12. What is the basicity of H(3)PO(4) ?

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  13. What happens when H(3)PO(3) is heated.

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  14. List the important sources of sulphur.

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  15. Write the order of thermal stability of the hydrides of group 16 eleme...

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  16. Why is H(2)O a liquid and H(2)S a gas?

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  17. Which of the following does not react with oxygen directly? Zn,Ti,Pt,F...

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  18. Complete the following reactions: (i) C(2) H(4) + O(2) to (ii)...

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  19. Why does O3 act as a powerful oxidising agent?

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  20. How is O(3) estimated quantitatively ?

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  21. What happens when sulphur dioxide is passed through an aqueous solutio...

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