Chemistry

Question Analysis
This question involves types of covalent bonds, focusing on understanding how electrons are shared in polar versus nonpolar covalent bonds.

Key Concept Explanation
Covalent bonds involve the sharing of electrons between atoms.
Nonpolar covalent bonds occur when electrons are shared equally, usually between atoms with similar electronegativity.
Polar covalent bonds occur when electrons are shared unequally due to a difference in electronegativity.

Option Analysis
The main difference between polar and nonpolar covalent bonds is described in Option B: Polar bonds have unequal sharing of electrons, while nonpolar bonds have equal sharing.
This directly describes the key difference: equal sharing (nonpolar) occurs when electronegativity is the same, and unequal sharing (polar) occurs when electronegativity differs.

Verify the other options:
Option A: Incorrect. This describes ionic bonds, not coval...