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Give reasons for the extra stability of ...

Give reasons for the extra stability of benzene.

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CHHAYA PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE-WARM UP EXERCISE
  1. Which of the molecules or ions are iso-structural and why? BF(3),NH(...

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  2. All the C-O bond lengths in CO(3)^(2-) are equal-explain.

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  3. Give reasons for the extra stability of benzene.

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  4. Write the canonical structures for sulphite ion and phosphate ion.

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  5. All the C-O bond lengths in CO(3)^(2-) are equal-explain.

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  6. Define electronegativity of an element.

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  7. Explain Pauling's scale of electronegativity.

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  8. Which is the most electronegative element according to the pauling's s...

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  9. Which one among the following pairs is more electronegative and why? ...

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  10. What do you mean by dipole moment of a molecule?

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  11. Mention the SI units of dipole moment.

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  12. Some molecules are non-polar even though they contain polar bond-expla...

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  13. How will you distinguish between the two geometrical isomers of 1.2-di...

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  14. Explai why the following molecules are non-polarr: (i) C Cl(4), (ii)...

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  15. Predict the dipole moment off (i) a molecule of the type AB(4) having ...

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  16. Explain why the dipole moment values of hydrogen halides decrease from...

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  17. Explain why the dipole moment of CD(3)F (1.858 D) is higher than that ...

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  18. What is hybrogen bond? Is it stronger than a covalent bond?

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  19. How many types of hybrogen bonds are there? Illustrate each type with ...

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  20. Write down the conditions for hybrogen bond formation.

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