What are the properties of simple molecular structures?

What are the properties of simple molecular structures?
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Simple molecular structures have very strong covalent bonds, but the intermolecular forces are very weak. This means they can be parted easily, which means they are not very hard or strong and can have thus a very low melting point. This means that at room temperature, they are usually gases or liquids.Since they have no ions either, they cannot conduct electricity very well. Simple molecular solids such as ice, tends to melt easily and dissolve in organic solvents.
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