Answer:
Based on electronegativities H-F bond is most polar and H-H bond is less polar.
Explanation:
Electronegativity can defined as the ability of an atom to attract the bonding electron pair towards itself.This result in the generation of polarity.
H-F bond most polar because Fluorine is most electronegative among nitrogen,hydrogen and oxygen.
On the other hand H-H bond is least polar or nonpolar because the boding electron pair are equally shared by the two hydrogen atoms.
