Question

Which of the following molecule has the most polar bond?

• A. Cl$_2$
• B. HCl
• C. PCl$_3$
• D. N$_2$
• E. HF

Hint:

To determine bond polarity, compare the electronegativity values of the atoms. The larger the difference, the more polar the bond.

Answer 1

Answer: (E)

The polarity of a bond depends on the difference in electronegativity between the two atoms involved. The greater the difference in electronegativity, the more polar the bond will be.
- In ${HF}$, fluorine is highly electronegative compared to hydrogen, creating a large difference in electronegativity and resulting in the most polar bond among the options.
Thus, the molecule with the most polar bond is $\boxed{{HF}}$.