Final answer:
Nitrogen and chlorine are less polar than a nitrogen-oxygen bond.
Step-by-step explanation:
The statement that nitrogen and chlorine are less polar than a nitrogen-oxygen bond is true.
Nitrogen is less electronegative than oxygen, so a nitrogen-chlorine bond will have a smaller electronegativity difference compared to a nitrogen-oxygen bond. This smaller difference in electronegativity leads to a less polar bond.
For example, in a molecule like HCl (hydrogen chloride), the electronegativity difference between chlorine (3.0) and hydrogen (2.1) is larger than the electronegativity difference between oxygen (3.5) and nitrogen (3.0). Therefore, the nitrogen-oxygen bond is more polar than the nitrogen-chlorine bond.