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Give some examples which illustrate the ...

Give some examples which illustrate the failure of the octet rule. What explanations have been suggested to explain the failure of the octet rule?

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ICSE-CHEMICAL BONDING AND MOLECULAR STRUCTURE-ESSAY (LONG ANSWER ) TYPE QUESTIONS
  1. What do you understand by covalency?The maximum covalency is equal to ...

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  2. Compare the important properties of ionic and covalent compounds.

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  3. Give some examples which illustrate the failure of the octet rule. Wha...

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  4. What do you understand by partial ionic character in a covalent bond? ...

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  5. When does an ionic bond develop a partial covalent character?

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  6. What do you understand by polarisation? State and explain Fajan's rule...

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  7. Define resonance and resonance energy. What are the conditions for res...

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  8. State and explain the main postulates of VSEPR theory. How is this the...

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  9. State and explain the main postulates of valence bond theory. How does...

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  10. What do you understand by overlapping of orbitals? Discuss the overlap...

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  11. What do you understand by hybridisation? Explain with examples the var...

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  12. Write the Lewis structures of the following molecules : O3 , SO2 , ...

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  13. What do you understand by partial ionic character in a covalent bond? ...

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  14. Define dipole moment. How is it related to the molecular structure?

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  15. Arrange on the basis of bond angle NO3-, NO2- NO2. and NO2+

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  16. Discuss the shape of the following molecules using the VSEPR m...

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  17. What is hydrogen bonding and what are the conditions which favour its ...

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  18. Describe the salient features of valence bond theory. Explain the form...

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  19. State the salient features of molecular orbital theory.

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  20. Describe molecular orbital. How is it different from an atomic orbital...

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