Hydrogen has an electronegativity value of 2.1.Given the electronegativity of N,O,and P (3.0,3.5,and 2.1,respectively),which of the following molecules has nonpolar bonds?

Question

Quizplus · Accepted Answer

A molecule with nonpolar bonds occurs when the electronegativity difference between the bonded atoms is 0 or very small (less than 0.5). In this case, only PH₃ has nonpolar bonds because H and P have the same electronegativity value of 2.1, so the electronegativity difference is 0. NH₃ and H₂O have polar bonds because N and O are significantly more electronegative than H, resulting in an electronegativity difference of over 1.5.

Hydrogen Has an Electronegativity Value of 2