Question

2 mark for review which of the following bonds is most polar? a f - f b o - f c o - i d o - cl

Explanation:

The polarity of a bond depends on the electronegativity difference between the two atoms. The greater the electronegativity difference, the more polar the bond. Fluorine (F) has the highest electronegativity. Oxygen (O) has an electronegativity of 3.44, fluorine (F) of 3.98, chlorine (Cl) of 3.16, iodine (I) of 2.66. For F - F, electronegativity difference is 0. For O - F, it is 3.98 - 3.44=0.54. For O - I, it is 3.44 - 2.66 = 0.78. For O - Cl, it is 3.44 - 3.16=0.28.

Answer:

C. O-I