* Electronegativity: Oxygen is more electronegative than carbon. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. Oxygen has a higher electronegativity value (3.44) than carbon (2.55). This means oxygen has a stronger pull on the shared electrons in the bond.
* Polarity: The uneven sharing of electrons due to the electronegativity difference creates a polar covalent bond. The oxygen atom becomes slightly negatively charged (δ-) because it attracts the electrons more strongly, while the carbon atom becomes slightly positively charged (δ+).
* Electron Density: The higher electron density around the oxygen atom makes it appear as though the electrons are closer to it.
In summary: The electrons in a carbon-oxygen bond are closer to the oxygen atom because oxygen's stronger electronegativity pulls the shared electrons towards itself, creating a polar covalent bond.
