Which type of chemical bond results from the unequal sharing of electrons between atoms?

• A. Nonpolar covalent bond
• B. Polar covalent bond
• C. Metallic bond
• D. Ionic bond

Answer: (B)

Verified step by step guidance

1. Understand that a chemical bond forms when atoms share or transfer electrons to achieve a more stable electron configuration.
2. Recognize that in a covalent bond, atoms share electrons. If the sharing is equal, the bond is nonpolar covalent; if unequal, it is polar covalent.
3. Recall that unequal sharing of electrons occurs when atoms have different electronegativities, causing a partial positive and partial negative charge on the atoms.
4. Identify that a polar covalent bond results from this unequal sharing, leading to a dipole moment in the molecule.
5. Differentiate this from ionic bonds (complete transfer of electrons) and metallic bonds (delocalized electrons among metal atoms), which are not characterized by unequal sharing.