Order the following bonds from the least polar to the most polar. N-O, Ca-O, C-O, O-O, Ni-O

Question

Quizplus · Accepted Answer

To determine the polarity of bonds, we need to consider the electronegativity difference between the two atoms involved. The greater the difference in electronegativity, the more polar the bond.

Oxygen is a highly electronegative element (3.44).

N-O: Electronegativity difference = 3.44-3.0 = 0.44 
Ca-O: Electronegativity difference = 3.44-1.0 = 2.44 
C-O: Electronegativity difference = 3.44-2.55 = 0.89 
O-O: Electronegativity difference = 3.44-3.44 = 0 
Ni-O: Electronegativity difference = 3.44-1.91 = 1.53

Therefore, the bonds can be arranged in order of polarity as:

O-O < N-O < C-O < Ni-O < Ca-O

Hence, option D is the best choice.

Order the Following Bonds from the Least Polar to the Most