Question

Which of the following molecules contains polar covalent bonds?

Answer 1

Answer:

H₂O

Explanation:

Hello,

In this case, polar covalent bonds are identified by looking the electronegativity difference between the bonding atoms, if its less than 1.7 and more than 0.7, thus, for water, H₂O, it turns out:

$=3.5-2.1\\=1.4$

Thereby, it is polar covalent, whereas the other ones are ionic or nonpolar covalent.

Regards.