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Write the significance of a plus and a m...

Write the significance of a plus and a minus sign shown in representing the orbitals.

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Molecular orbitals are represented by wave functions. A plus sign in an orbital indicates a positive wave function while a minus sign in an orbital represents a negative wave function.
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NCERT-CHEMICAL BONDING AND MOLECULAR STRUCTURE-EXERCISE
  1. Apart from tetrahedral geometry, another possible geometry for CH(4) i...

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  2. Explain why BeH(2) molecule has a zero dipole moment although the Be-H...

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  3. Out of NH(3) and NF(3) which has a higher Dipole moment?

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  4. What is meant by hybridisation of atomic orbitals? Describe the shape ...

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  5. Describe the change in hybridization (if any) of the Al atom in the fo...

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  6. Is there any change in hybridisation of the B and N atom as a result o...

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

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  8. What is the total number of sigma and pi bonds in the following molecu...

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  9. Considering X axis as the inter nuclear axis, which out of the followi...

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  10. Which hybrid orbitals are used by carbon atoms in the following molecu...

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

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  12. Distinguish between a sigma and a pi bond.

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  13. Explain the formation of H(2) molecule on the basis of valence bond th...

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

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

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

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  17. Write the significance of a plus and a minus sign shown in representin...

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  18. Describe the hydribisation in case of PCl(5). Why are the axial bonds ...

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

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  20. What is meant by the term bond order? Calculate the bond order of N(2)...

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