Polar molecules are molecules that have an uneven distribution of charge, meaning they have a positive and negative end or pole.
Think of polar molecules like magnets. Just as magnets have a north and south pole, polar molecules also have two poles - a positive end and a negative end. This polarity allows them to attract other polar molecules just like magnets stick together.
Dipole Moment: It's the measure of the polarity of a molecule. The larger the difference in electronegativities of bonded atoms, the larger the dipole moment.
Electronegativity: It is a measure of how strongly an atom can attract electrons towards itself in a chemical bond.
Hydrogen Bonding: A type of intermolecular force where hydrogen atom from one polar molecule is attracted to an electronegative atom (usually nitrogen, oxygen or fluorine) from another molecule.
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