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Explain why He2 molecule does not exist....

Explain why `He_2` molecule does not exist.

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ICSE-CHEMICAL BONDING AND MOLECULAR STRUCTURE-REVIEW EXERCISES
  1. What is meant by sigma and pi it bonds? Compare their characteristics.

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  2. Describe the formation of HF and NH3 molecules on the basis of valence...

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  3. Explain why He2 molecule does not exist.

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  4. Describe the formation of H2 O molecule on the basis of valence bond t...

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  5. What are the limitations of valence bond theory?

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  6. Sketch the shapes of the molecular orbitals formed by the overlap of (...

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  7. Explain bonding and antibonding molecular orbitals.

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  8. Compare atomic orbitals with molecular orbitals.

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  9. What is bond order? How is it related to bond length and bond dissocia...

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  10. Why are the bond orders in He(2)^(+) and He identical?

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  11. Draw the MO diagram for the O2 molecule and determine the bond order a...

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  12. Write the ground state electronic configuration of F(2)^(+).

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  13. Write the MO electronic configuration of a diatomic molecule having a ...

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

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

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  16. If PsiA and PsiB are the wave functions of two combining orbitals, wha...

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  17. How many molecular orbitals are formed by the combination of two lithi...

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  18. Label the molecular orbitals formed by the following combinations of a...

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  19. Label the molecular orbitals formed by the following combinations of a...

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  20. Label the molecular orbitals formed by the following combinations of a...

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