Question

Which contains both polar and non polar bonds? a) NH4Cl b) HCN C) H2O2 D) HClO2
please give proper method and solution not just option a or b plzzzz

Answer 1

I think it is H2O2 because

O-H bond is polar due to electronegativity difference between O and H.

O-H bond is non-polar.

Now,

Let us consider the remaining examples

NH4Cl: all the bonds are polar  .

HCN: Both the C-H and the C-N bonds are polar .

HClo2 is polar..

Hope this helps!

Answer 2

Answer:

Let's consider the Lewis dot structure for visual aide:

H-O–O-H

With a lone pair of electrons on each Oxygen atom. Because of the difference in electronegativity between Hydrogen and Oxygen, the single bonds between them are polar, with a partial negative charge on oxygen and partial positive on Hydrogen. Since Oxygen has the same electronegativity as itself, there is no difference in polarity across the bond, so it is nonpolar.

Explanation: