The number of valence shell electrons will generally determine the bonding characteristics of the element in question.
The number of electrons in the atoms outer shell.
valance
The answer expected here is non-metal, and examples are carbon, chlorine, sulfur phosphorus. Metals have metallic bonds. However there are compounds where atoms of a metallic element form covalent bonds to other atoms of the same element.
Its carbon atoms have no double bonds between them.
Carbon.
both covalent bonds and polar bonds
its carbon atoms have no double bonds between them.
Its carbon atoms have no double bonds between them.
the presence or absence of double bonds between the carbon atom and other atoms
Carbon can atoms can form four covalent bonds with many, many different elements.
Carbon will almost always form bonds with other carbon atoms, and that is part of what makes it such a useful element.
Covalent Bonds