Which type of chemical bond is generally considered the most polar?

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

Answer: (D)

Verified step by step guidance

1. Understand the concept of bond polarity: Polarity in a chemical bond arises due to the difference in electronegativity between the two atoms involved. The greater the difference, the more polar the bond.
2. Review the types of bonds: Nonpolar covalent bonds have little to no electronegativity difference, polar covalent bonds have moderate differences, and ionic bonds have very large electronegativity differences, often resulting in electron transfer rather than sharing.
3. Compare bond types based on electronegativity difference: Metallic bonds involve a 'sea of electrons' and are generally not described in terms of polarity. Nonpolar covalent bonds have nearly equal sharing of electrons, so they are the least polar.
4. Recognize that ionic bonds are formed when the electronegativity difference is so large that one atom completely transfers electrons to another, creating ions with full charges, which makes ionic bonds the most polar.
5. Conclude that among the options given, ionic bonds are generally considered the most polar due to the complete transfer of electrons and the resulting strong electrostatic attraction between ions.