Question

State the reason why carbon can for neither cation or anion but forms covalent compounds also state reason to explain why covalent compounds 1 are bad conductors of electricity 2 have low melting and boiling point

Answer 1

Hey!
Carbon does not form cation or anion because not more than 4 electrons are lost or gained.So, it can neither lose nor gain 4 electrons to attain stable octet.Therefore, it forms covalent bonds to attain stable configuration.

(i)
Covalent bonds are poor conductors of electricity because they do not contain free ions which contribute to their poor conductivity.
(ii)
This is so because they have weak forces of attraction between the binding molecules thus less energy is required to break the force of bonding.




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Answer 2

♤ Carbon can't lose 4 electron to form C^4+ ions as very high energy is required to remove 4 electrons.

♤ Carbon can not gain 4 electron to form C^4- ions as 6 protons can not hold 10 ♤ electrons and Energy needs to be supplied to overcome repulsion.

♤ Carbon can share 4 electron to form covalent compounds.

♤ Carbons do not conduct electricity as they are non - polar and do not form ions.

♤ They have low melting points and boiling points due to weak van der Waal's force of attraction between molecules