Which of the Following Molecules Contains the Most Polar Covalent

Question

Which of the following molecules contains the most polar covalent bond?
A) H₂
B) O₂
C) CO₂
D) H₂O
E) CH₄

Accepted Answer

The most polar covalent bond occurs in H₂O due to the large difference in electronegativity between hydrogen and oxygen atoms. This creates a permanent dipole moment and makes the bond more polar than the other options.