Final answer:
Simple molecular compounds typically have a low melting point due to weak intermolecular forces.
Step-by-step explanation:
The statement that best describes a property of many simple molecular compounds is low melting point. Simple molecular compounds are composed of individual molecules held together by weak intermolecular forces. These weak forces result in low melting points, meaning they tend to be in a liquid or gas state at room temperature.
An example of a simple molecular compound with a low melting point is methane (CH4). Methane exists as a gas at room temperature because the intermolecular forces between its individual molecules are weak.
In contrast, options B, C, and D are not characteristics commonly associated with simple molecular compounds. High boiling points are more typically seen in compounds with strong intermolecular forces, while hard solids and large networks of atoms are more commonly found in ionic compounds or network solids.
Learn more about Properties of simple molecular compounds