Which bond type occurs when there is unequal sharing of electrons creating partial charges?

Which bond type occurs when there is unequal sharing of electrons creating partial charges?

• A. Ionic Bonds
• B. Covalent Bonds
• C. Polar Covalent Bonds
• D. Metallic Bonding

Answer: (C)

Unequal sharing of electrons happens when two atoms with different electronegativities form a covalent bond. The more electronegative atom pulls the shared electrons closer, creating a partial negative charge on that atom and a partial positive charge on the other. This creates a polar covalent bond—electrons are shared, but not equally, so there are distinct partial charges rather than full charges. This differs from ionic bonds, where electrons are transferred and full charges (ions) are formed, and from metallic bonds, where a “sea” of electrons moves freely around a lattice of positive ions. It’s also different from nonpolar covalent bonds, where electrons are shared more evenly and no significant partial charges appear. The key idea here is the uneven electron distribution leading to partial charges.

Unequal sharing of electrons happens when two atoms with different electronegativities form a covalent bond. The more electronegative atom pulls the shared electrons closer, creating a partial negative charge on that atom and a partial positive charge on the other. This creates a polar covalent bond—electrons are shared, but not equally, so there are distinct partial charges rather than full charges.

This differs from ionic bonds, where electrons are transferred and full charges (ions) are formed, and from metallic bonds, where a “sea” of electrons moves freely around a lattice of positive ions. It’s also different from nonpolar covalent bonds, where electrons are shared more evenly and no significant partial charges appear. The key idea here is the uneven electron distribution leading to partial charges.