Question

2. why most of the carbon compounds have low melting and boiling points as compared to ionic compounds

Answer 1

basically carbon atoms are non metal they r having a weak vander walls force of attraction is present and it is tertravalent all its electrons combine with other carbon atoms so it is having low melting and boiling point

Answer 2

Carbon compounds generally have low melting points and boiling points because the force of attraction between the molecules of carbon compounds is not very strong. These weak intermolecular forces make them very easy to pull apart from each other.