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On the basis of molecular orbital theory...

On the basis of molecular orbital theory, explain why `He_2` does not exist whereas Hezexists?

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ICSE-CHEMICAL BONDING AND MOLECULAR STRUCTURE-ESSAY (LONG ANSWER ) TYPE QUESTIONS
  1. Discuss the shape of the following molecules using the VSEPR m...

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

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

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  4. State the salient features of molecular orbital theory.

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

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  6. What is LCAO method? How does it lead to the concept of bonding and an...

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  7. What do you understand by an energy level diagram? Show the molecular ...

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  8. What is bond order? How is it obtained from a MO diagram?

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  9. Draw the molecular orbital diagrams of H2, H(2)^(+) and H(2)^(-) and d...

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  10. On the basis of molecular orbital theory, explain why He2 does not exi...

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  11. Draw the molecular orbital diagram of N2 molecule and write its molecu...

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  12. Draw the molecular orbital diagram of O2 molecule. How would you expla...

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  13. What are the conditions of combination of atomic orbitals? Which speci...

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  14. Write the molecular orbital configuration of the following species : ...

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  15. Mention the main points of similarities and differences between valenc...

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  16. What do you understand by hybridisation? Discuss the need and rules of...

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  17. Explain : The bond angle in methane is 109^@ 28'.

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  18. Explain : Ethene is a planar molecule.

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  19. Give reason for the following. a) Covalent bonds are directional bon...

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  20. N2 has greater bond energy than N(2)^(+) but O2 has lower bond dissoci...

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