Why Do Covalent Compounds Have Low Melting and Boiling Points?

BY Team Aakash Byju's

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Covalent compounds are chemical substances that are formed by covalent bonds. Covalent compounds have atoms that share one or more pairs of valence electrons.

Covalent Compounds

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Covalent Compound Examples

Oxygen, Nitrogen, Hydrogen, Water, Ammonia, Methane, Carbon monoxide and Carbon dioxide.

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Covalent compounds do not conduct electricity.

Properties of Covalent Compounds

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These compounds are insoluble in water but soluble in organic chemical solutions.

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Covalent compounds are commonly made up of neutral chemical molecules.

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Covalent compound's melting point and boiling point are commonly low.

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The temperature at which a chemical substance changes from a solid to a liquid state.

Melting Point

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Boiling Point

The temperature at which a chemical substance vapour pressure equals atmospheric pressure.

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Covalent compounds’ melting point and boiling point are commonly low because weak Van der Waals forces hold the molecules together in covalent compounds.

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Van der Waals forces are the attraction and repulsion forces between molecules, atoms, surfaces and intermolecular forces.

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Hence covalent compounds have a low melting point and low boiling point.