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Out of sigma and pi- bonds, which one i...

Out of `sigma` and `pi-` bonds, which one is stronger and why?

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`sigma `-bond is stronger . This is because `sigma `-bond is formed by head-on overlapping of atomic orbitals and ,
therefore , the overlapping is large . `pi` -bond is formed by sideway overlapping which is small .
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PRADEEP-CHEMICAL BONDING AND MOLECULAR STRUCTURE-ANALYTICAL QUESTIONS AND PROBLEMS WITH ANSWERS/SOLUTIONS
  1. Why is solubility of MgCl(2) much greater than that of MgF(2) ?

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  2. Why is NaCl a bad conductor of electricity in the solid state?

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  3. Out of sigma and pi- bonds, which one is stronger and why?

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  4. Out of CS(2) and OCS which have higher dipole moment and why?

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  5. Indicate4 whether the following statement is TRUE or FALSE. Justify yo...

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  6. Which is more polar and why, CO(2) or N(2)O?

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  7. Why AlF(3) is a high melting solid wheareas SiF(4) is a gas ?

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  8. Why NF(3) pyramidal but BF(3) is triangular planar ?

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  9. Why is that in the SF(4) molecule, the lone pair of electrons occupies...

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  10. Why bond angle in H(2)O is nearly 104.5^(@) but that in H(2) S , it i...

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  11. Explain why N(2) has a greater bond dissociation energy than N(2)^(+) ...

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  12. Can we have a diatomic molecule with its ground state moleculer orbita...

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  13. Out of H and H(2) , the latter has higher first ionization energy whil...

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  14. Given reason for the following : H(2)^(+) and H(2)^(-) ions have t...

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  15. KHF(2) exists while KHCl(2) does not. Explain.

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  16. When we move from HF to HCl , the boiling point sharply but on moving...

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  17. Out of o-nitrophenod and p-nitrophenol, which has higher boiling point...

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  18. Why glucose, fructose, sucrose etc. are soluble in water through they ...

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  19. Using the VSEPR theory, identify the type of hybridisation and draw th...

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  20. Which of the following has higher dipole moment and why? But -1- ene...

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