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What do you understand by variable elect...

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

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ICSE-CHEMICAL BONDING AND MOLECULAR STRUCTURE-ESSAY (LONG ANSWER ) TYPE QUESTIONS
  1. Explain why : dipole moment of H2 O is much higher than that of H2 S...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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