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Chemical polarity

"Polar molecule" and "Nonpolar" redirect here. For other uses of the term "Polar", see Polar.
A water molecule, a commonly used example of polarity. Two charges are present with a negative charge in the middle (red shade), and a positive charge at the ends (blue shade).

In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole moment, with a negatively charged end and a positively charged end.

Polar molecules must contain one or more polar bonds due to a difference in electronegativity between the bonded atoms. Molecules containing polar bonds have no molecular polarity if the bond dipoles cancel each other out by symmetry.

Polar molecules interact through dipole-dipole intermolecular forces and hydrogen bonds. Polarity underlies a number of physical properties including surface tension, solubility, and melting and boiling points.


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Polêre molekule AF قطبية كيميائية Arabic Polaridá (química) AST Хімічная палярнасць BE Polaritat química Catalan Polaridad sa usa ka Kimikal CEB Kemisk polaritet Danish Polarität (Chemie) German Χημική πολικότητα Greek Polaridad (química) Spanish

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