Final answer:
The statement that low melting points and lack of electrical conductivity are properties of molecular compounds is true. Molecular compounds display these properties due to weaker intermolecular forces and the absence of charged particles that facilitate conduction.
Step-by-step explanation:
True, low melting points and lack of electrical conductivity are properties of molecular compounds. Molecular compounds, also known as covalent compounds, are generally characterized by lower melting and boiling points than ionic compounds. This is due to the fact that they consist of discrete molecules held together by weaker intermolecular forces like London dispersion forces, hydrogen bonding, or dipole-dipole forces. Since these intermolecular forces are easier to disrupt than the ionic bonds in crystalline solids, the energy required to melt or boil molecular compounds is less. Additionally, molecular compounds are composed of neutral molecules and tend to exhibit poor electrical conductivity, both in solid and liquid states. Unlike ionic compounds, which can conduct electricity when molten or in solution, molecular compounds do not allow for the free movement of charged particles necessary for conduction.