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Bond angle in PH(4)^(+) is higher than t...

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

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In `PH_(3)`, P is `sp_(3)` hybridized. Three orbitals are involved in bonding with three hydrogen atoms and the fourth one contains a lone pair. As lone pair-bond pair repulsion is stronger than bond pair-bond pair repulsion, the tetrahedral shape associated with `sp_(3)` bonding is changed to pyramidal. `PH_(3)` combines with a proton to form in which the lone pair is absent. Due to the absence of lone pair in, there is no lone pair-bond pair repulsion. Hence, the bond angle in is higher than the bond angle in `PH_(3)`
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NCERT ENGLISH-THE P-BLOCK ELEMENTS-EXERCISE
  1. How does ammonia react with a solution of Cu(2)^(+)?

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  2. What is the covalence of nitrogen in N2O5?

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

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  4. (a)What happens when white phosphorus is heated with concentrated NaOH...

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  5. What happens when (A)PCl(5) is heated. (B)PCl(5) is reacted with h...

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  6. Write a balanced equation for the hydrolytic reaction of PCl5 in heavy...

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

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  8. What happens when (A)PCl(5) is heated. (B)PCl(5) is reacted with h...

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  9. List the important sources of sulphur.

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

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

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

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

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

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  15. How is O(3) estimated quantitatively ?

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

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  17. Comment on the nature of two S–O bonds formed in SO(2) molecule. Are t...

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  18. How is the presence of SO2 detected?

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  19. Mention three areas in which H2SO4 plays an important role.

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  20. Write the conditions to maximise the yield of H2SO4 by contact process...

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