Correct option is C
- Carbon compounds, such as organic compounds, typically have covalent bonds.
- In the molten state, the absence of free-moving ions in covalent bonds means they cannot conduct electricity.
- For conduction of electricity, the substance needs to have charged particles (ions or free electrons) that are able to move freely, which is not the case with most carbon compounds.
Information Booster
- Covalent bonding: In covalent compounds, atoms share electrons rather than forming ions. This prevents the formation of free-moving charged particles in the molten state, hence they do not conduct electricity.
- Ionic compounds: In contrast, ionic compounds dissociate into ions when melted or dissolved, which allows the conduction of electricity.
- Examples: Sodium chloride (NaCl) conducts electricity when molten because it dissociates into Na+ and Cl- ions. However, carbon compounds like methane or glucose do not have such ion formation and thus do not conduct electricity in molten form.