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Define resonance....

Define resonance.

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MODERN PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE-Revision Exercises (Objective Questions)(Very Short Answer Questions)
  1. Out of CS(2) and OCS which have higher dipole moment and why?

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  2. An element A has the electronic configuration 1s^(2)2s^(2)2p^(6)3s^(2)...

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  3. Define resonance.

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  4. How does the hybridisation of carbon atom in CH(2)=CH(2) change when i...

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  5. Give two examples of molecules containing coordinate bond.

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  6. What are the shapes of (i) BF(3) and (ii) NH(3) molecules?

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  7. Which of the two bonds : ionic or covalent is directional?

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  8. Can a pi- bond be formed without the formation of a sigma- bond. How m...

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  9. Draw Lewis structure of O^(2-) and N^(3-) ions.

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  10. Give bond angles in H(2)O, CH(4) and SF(6) molecules.

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  11. Write the favourable factors for the formation of ionic bond.

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  12. Define electric dipole moment. Write its SI unit ?

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  13. How many sigma- and pi- bonds are present in naphthalene?

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  14. Out of NaCl and MgO which has higher lattice energy ?

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  15. What do you understand by bond pairs and lone pairs of electrons? Illu...

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  16. Define electronegativity and dipole moment.

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  17. Give one example each of a tetraatomic molecule which is (i) Polar ...

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  18. Give one example each of a molecule having (i) 6 bond pairs (ii) 7...

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  19. What is the total number of sigma bonds and pi bonds in H(3)C-unders...

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  20. What shapes are associated with sp^(3)d and sp^(3)d^(2) hybrid orbital...

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