Here's why:
* Polarity: A molecule is considered polar when there is an uneven distribution of electron density, creating areas with a slight positive charge (δ+) and areas with a slight negative charge (δ-).
* Uneven Sharing: This uneven distribution usually arises from differences in electronegativity between the atoms in the molecule. More electronegative atoms attract electrons more strongly, creating a partial negative charge near them and a partial positive charge on the less electronegative atoms.
* Examples: Water (H₂O) is a classic example of a polar molecule. The oxygen atom is more electronegative than the hydrogen atoms, creating a partial negative charge on the oxygen and partial positive charges on the hydrogens.
Let me know if you'd like more information on polar molecules!
