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what is the total number of sigma and pi...

what is the total number of sigma and pi bonds in the following molecules?
a. `C_(2)H_(2)` , b. `C_(2)H_(4)`

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`(a)underset("pi"bonds=2)underset("Sigma""bonds"=3)(H-C-=C-H)" "(b)underset("pi""bond"=1.)underset("Sigma""bonds"=5)(H-overset(H)overset(|)C=overset(H)overset(|)C-H)`
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DINESH PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE -BORD EXAMINATIONS
  1. Is there any change in hybridisation of the B and N atom as a result o...

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  2. Draw diagrams showing the formation of a double bond and a triple bond...

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  3. what is the total number of sigma and pi bonds in the following molecu...

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  4. Considering X-axis as the internucler axis, which out of the following...

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  5. Which hybrid orbitals are used by the carbon atoms in the following mo...

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  6. What do you understand by bond pairs and lone pairs of electrons? Illu...

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  7. Distinguish between a sigma and a pi bond.

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  8. Explain the formation of H(2) molecule on the basis of valance bond th...

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  9. Write the important conditions required for the linear combination of ...

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  10. Use molecular orbital theory to explain why the Be(2) molecules do not...

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  11. Compare the relative stability of the following species and indicate t...

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  12. Write the singificance of plus and inus signs in representing the opit...

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  13. Describe the hybridisation in case of PCl(2). Why are the axial bonds ...

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  14. Define hydrogen bond. Is it weaker or stronger than the van der Waals ...

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  15. What is meant by the term bond order ? Calculate the bond order ? Calc...

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  16. Interpret the non-linear shape of H(2)S molecule and non-planar shape ...

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  17. Using molecular orbital theory, compare the bond energy and magnetic c...

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  18. Explain the shape of BrF(5^.)

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  19. Structures of molecules of two compounds are given: (a) Which of the...

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  20. Why does type of overlap given in the following figure not result in b...

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