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Define a covalent bond. Explain the form...

Define a covalent bond. Explain the formation of `Cl_2, NH_3,O_2 and PCl_3` molecules. How does the multiplicity of bonds affect the bond length and bond energy?

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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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