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Why does NH3 form hydrogen bond but PH3 ...

Why does `NH_3` form hydrogen bond but `PH_3` does not?

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Nitrogen is highly electronegative as compared to phosphorus. This causes a greater attraction of electrons towards nitrogen in `NH_(3)`than towards phosphorus in `PH_(3)`. Hence, the extent of hydrogen bonding in `PH_(3)` is very less as compared to `NH_(3)`.
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NCERT-THE P-BLOCK ELEMENTS-EXERCISE
  1. Why does the reactivity of nitrogen differ from phosphorus?

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  2. Discuss the trends in chemical reactivity of group 15 elements.

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  3. Why does NH3 form hydrogen bond but PH3 does not?

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  4. How is nitrogen prepared in the laboratory? Write the chemical equatio...

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  5. How is ammonia manufactured industrially?

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  6. Illustrate how copper metal can give different product on reaction wit...

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  7. Give the resonating structures of NO(2) and N(2)O(5).

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  8. The HNH angle value is higher than HPH, HAsH and HSbH angles. Why?

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

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  10. Explain why NH(3) is basic while BiH(3) is only feebly basic ?

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  11. Nitrogen exists as diatomic molecule and phosphorus as P(4). Why ?

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  12. Write main differences between the properties of white phosphorus and ...

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  13. Why does nitrogen show catenation properties less than phosphorus.

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  14. Give the disproportionation reaction of H3PO3.

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  15. Can PCl5 act as an oxidising as well as a reducing agent? Justify.

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  16. Justify the placement of O, S, Se, Te and Po in the same group of the ...

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  17. Why is dioxygen a gas but sulphur a solid?

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  18. Knowing the electron gain enthalpy values for O rarr O^(Ө) and O rarr ...

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  19. Which aerosols deplete ozone?

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  20. Describe the manufacture of H(2)SO(4) by contact process?

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