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Bond angle in H(2)O is greater than that...

Bond angle in `H_(2)O` is greater than that of `H_(2)S`- explain.

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Both `H_(2)O and H_(2)S` have a tetrahedral geometry. Since ip-bp repulsions are greater than bp-bp repulsions, there molecules attain a distorted tetrahedral geometry, where H-X-H (X=O or S) bond angles are less than normal tetrahedral angle of `109^(@)28'`. due to higher elecrtronegativity if central O-atom than S-atom, bp-bp repulsion is greater in case of O-H bond. hence, bond angle of `H_(2)O` is greater than `H_(2)S`.
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CHHAYA PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE-WARM UP EXERCISE
  1. In which of the following molecules/ions all the bonds are not equal ?

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  2. Bond angles in PB r(3)(101.5^(@)),(PB l(3)(100^(@)) and PF(3)(97^(@)) ...

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  3. Bond angle in H(2)O is greater than that of H(2)S- explain.

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  4. Arrange the following in order of increasing radii. F, Cl, Br

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  5. Arrange the following molecules/ions in order of decreasing H-N-H bond...

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  6. Write down the main postulates of valence bond theory.

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  7. What do you understand by the term atomic orbital?

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  8. Explain why covalent bonds possess directional property.

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  9. What do you meann by a sigma and pi-bond?

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  10. Why are the pi-bonds weaker and more reactive than the sigma-bonds?

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  11. Arrange (s-s), (s-p) and (p-p) sigma-bonds in order of decreasing bond...

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  12. Explain why the formation of a pi-bond is not possible between a p(y) ...

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  13. Which symmetry element is present in a pi-bond?

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  14. What is meant by hybridisation of atomic orbitals?

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  15. What will be the spatial distribution of (i) sp^(3), (ii) sp^(2) a...

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  16. Is hybridisation possible in an isolated atom?

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  17. The state of hybridisation of the central atom of which of the followi...

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  18. Name the type of hybridisation of the central atom which leads to eaac...

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  19. Identify the state of hybridisation of each carbon in: (i) CH(2)=CH-...

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  20. The four C-H bonds in methane are equivalent though carbon was differe...

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