Question

State the reason why carbon can neither form c4+ cations nor c4- anions but form covalent bond compound and state the reason to explain why covalent compounds 1.Are bad conductors of electricity 2.Have low melting and boiling points

Answer 1

Carbon has the atomic number 6 so it has an electronic configuration of 1s2 2s2 2p2 that is it has 4 electrons in the valence shell and thus to form a bond it has to either donate it's 4 electrons or accept it according to the octet rule to attain stability.

Atoms of carbon do not have free electrons in the conduction band. Therefore they do not conduct well at room temperature. If the temperature is increased, more electrons acquire energy and start contributing to conduction.

Molecules with covalent bonds tend tohave low melting and boiling points because these transformations require energy to break the bonds between molecules. ... Thus, covalentcompounds have low boiling andmelting points because their intermolecular interactions are weak.

I hope it will help you..

Plz mark as brainliest...

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