Why of2 is a polar molecule. explain in detail ?

Explanation:

Hybridization of is

Bond pair in = 2

lone pair in = 2

Because of presence of two lone pairs of electron shape is bent.

F is more electronegative than O, therefore two O-F bons are polar and hence, two dipole exists. The resultant diople moment in a molecule is the vector sum of individual existing dipoles (shown in the attachment).

because of the bent shape of two dipole moments add to each other. this result in the existence of permanent dipole moment in the molecule and thus is a polar molecule.

5.6⋅10−^19  j

do you need the explaination?

yes the answer is total mass in unchanged   : )