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  • (a) State the reason why carbon can neither form cations nor <img alt="C^{4-}" src="https://entrancecorner.codecogs.com/gif.latex?%5Cinline%20C%5

(a) State the reason why carbon can neither form C^{4+} cations nor C^{4-} anions, but forms covalent bonds. Also state reasons to explain why covalent compounds

(i) are bad conductors of electricity.

(ii) have low melting and boiling points.

(b) Write the structural formula of benzene, C_{6}H_{6}.

 

 

 

 
 
 
 
 

Answers (1)

Atomic no. of carbon is 6. It means 4 electrons in its outermost shell.

  • Carbon cannot form C^{4+} cation, as very high energy is required to remove four valence electrons.
  • Carbon cannot gain four electrons and form C^{4-} anion as its nervous with 6 protons cannot hold 10 electrons.

(i) Covalent compounds are bad conductor of electricity because they do not have free electrons.

(ii) The intermolecular forces of attraction between the covalent compounds are weak, so, they have quite low melting and boiling point.

(b) Structure of Benzene.

       

Posted by

Sumit Saini

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