Which of the following covalent bonds is the most polar (i.e., highest percent ionic character)
A) Al - I
B) Si - I
C) Al - Cl
D) Si - Cl
E) Si - P

Question

Quizplus · Accepted Answer

The greater the electronegativity difference between two atoms, the more polar the bond. Chlorine has a higher electronegativity than aluminum, resulting in a polar covalent bond with a higher percent ionic character.

Which of the Following Covalent Bonds Is the Most Polar