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What are the conditions necessary for th...

What are the conditions necessary for the formation of covalent molecules ? Give their properties.

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ICSE-CHEMICAL BONDING AND MOLECULAR STRUCTURE-SHORT ANSWER TYPE QUESTIONS
  1. What do you understand by bond length? On what factors does it depend?

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  2. Carbon possesses only two unpaired electrons in its valence shell. How...

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  3. What are the conditions necessary for the formation of covalent molec...

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  4. Why is a molecule involving sp^2 hybridisation trigonal and planar?

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  5. Explain how the valence bond theory accounts for a carbon carbon doubl...

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  6. Explain the formation of C2 H2 molecule.

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  7. Explain why the compounds of the type C2 H2 X2 exhibit cis-trans isome...

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  8. Why does a covalent bond develop a partial ionic character when the el...

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  9. How do the metals conduct heat and electricity?

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  10. Explain why : metals are malleable and ductile,

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  11. Explain why : sodium can be cut with a knife,

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  12. Why is H(2)O a liquid and H(2)S a gas ?

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  13. Explain why : o-nitrophenol possesses low boiling point in spite of...

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  14. What do you understand by overlap integral and what does it signify?

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  15. State the salient features of molecular orbital theory.

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  16. What are the main points of difference between inductive and electrome...

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  17. What do you understand by linear combination of atomic orbitals?

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  18. Explain bonding and antibonding molecular orbitals.

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  19. What are the main points of difference between bonding and antibonding...

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  20. Give two differences between a sigma bond and a pi bond.""^(**"**)

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