Question

what is meant by polar nature of bonds ​

Answer 1

${\bold {\large {\red {\tt{polar\:nature }}}}}$

when a ionic bonds is about to getting dissociates it polarizes itself in anionic and cationic form.

eg

$Na + Cl - - > Na^{ + } + Cl^{ - }$

Answer 2

A polar bond is a covalent bond between two atoms where the electrons forming the bond are unequally distributed. This causes the molecule to have a slight electrical dipole moment where one end is slightly positive and the other is slightly negative