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What is octet rule? Is it followed by al...

What is octet rule? Is it followed by all molecules? What type of exceptions have been observed to this rule? Illustrate your answer with examples.

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ICSE-CHEMICAL BONDING AND MOLECULAR STRUCTURE-ESSAY (LONG ANSWER ) TYPE QUESTIONS
  1. What is an ionic bond and how is it formed? Illustrate your answer by ...

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  2. Define a covalent bond. Explain the formation of Cl2, NH3,O2 and PCl3 ...

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  3. What is octet rule? Is it followed by all molecules? What type of exce...

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

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

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  6. Explain why : The dipole moment of CO2 is zero although it contains ...

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  7. Explain why : Both BF3 and NH3 are the molecules of the type AB3 but...

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  8. Explain why : dipole moment of H2 O is much higher than that of H2 S...

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  9. What is the molarity of 1N H2SO4 solution?

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  10. What do you understand by variable electrovalency? Give atleast two ex...

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  11. What do you understand by covalency?The maximum covalency is equal to ...

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

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

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

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

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

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

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

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

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

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