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Explain why carbon has a valency of four...

Explain why carbon has a valency of four and not two and why are the four C-H bonds in methane identical .

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PRADEEP-CHEMICAL BONDING AND MOLECULAR STRUCTURE-ADDITIONAL QUESTIONS (SHORT ANSWER QUESTIONS)
  1. Give reason for the following : (i) In solution, reactions of covalen...

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  2. What type of hybridisation is associated with the central when the ato...

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  3. Explain why carbon has a valency of four and not two and why are the f...

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  4. Making use of the concept of hybridisation, predict the shape of C(2) ...

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  5. Draw shapes of H(2) O and C(2) H(4) .

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  6. Draw well labelled orbital diagrams for the following molecules : (...

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  7. Explain the shapes of SF(4) and CIF(3)

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  8. Why PCl(5) dissociates to give PCl(3) and Cl(2)?

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  9. Why the equatiorial and axial bond lengths of PCl(5) are not equl ?

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  10. Which hybridization is presumed for P in PF(3) and S in SF(6) ? Give r...

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  11. What is a coordinate bond ? Explain with two suitable example . How is...

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  12. What is resonance ? Define Resonance energy .

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  13. Draw the resonating structures of CO(2) ?

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  14. Sketch the shapes of molecular orbitals formed by the overlap of (i...

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  15. What do you understand by a molecular orbitals (m.o.) ? What is the ma...

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  16. What is meant by bonding and antibonding molecular orbitals ? Give the...

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  17. What are the condition for combination of atomic orbitals ? Which spec...

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  18. Use the molecular orbital energy level diagram to show that N(2) would...

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  19. What is meant by bond order ? Calculate the bond order of He(2)^(+) ,...

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  20. Calculate the bond order for H(2)^(+) ion. Is this ion expected to be ...

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