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Distinguish sigma and pi - bonds....

Distinguish sigma and pi - bonds.

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SURA PUBLICATION-CHEMICAL BONDING-SHORT ANSWERS QUESTIONS :
  1. Give reason for the higher melting point value of AlF(3) (solid) than ...

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  2. Why rocksalt is harder than metallic sodium ?

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  3. How is the bond order related to strength of the bond ?

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  4. Why are ionic compounds soluble in water whereas covalent compounds of...

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  5. Melting and boiling point of ionic compounds are higher then covalent ...

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  6. What are the number of bond pairs and lone pairs of electrons on N -...

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  7. Give two cations that exhibity sp^(3) hybridisation.

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  8. Give two examples of molecules undergoing sp^(3) d^(2) hybridisation a...

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  9. Define chemical bond.

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  10. Draw the Lewis structure of N, C, O and He.

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  11. Write short note on classification of chemical bonds.

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  12. Represent the bond formation in [Fe(CN)(6)]^(4-)" and " BF(3) - NH(3)

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  13. Answer the following : How does the size of atom infiuence bond leng...

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  14. Answer the following : On what factors does the bond energy value de...

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  15. Where does the new attractive and repulsive force arise in the hydroge...

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  16. Distinguish sigma and pi - bonds.

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  17. Write a short note on hybridisation .

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  18. Give the bond order for hydrogen molecule, nitrogen molecule and NO.

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  19. What is covalent bond ? Give suitable examples to represent single , ...

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  20. Define co-ordinate covalent bond.

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