What properties of carbon explain carbon's ability to form different large and complex structures?

Carbon's polarity could one etiological reason why it can greatly bond with various and numerous number of other compounds.

Non-polar Covalent bonding is the type of bonding that takes place when two atoms share a pair of electrons with each other. In order to form a molecule, these two electrons are glued to one or more atoms. One important contribution of non-covalent bonding is the oxygen we breathe. On the other hand, polar covalent bonding happens when a pair of electrons are being shared unequally because one of the atoms spends way too much time with another electrons rather than with the atoms.