Final answer:
The bonding between two copper atoms (Cu-Cu) is metallic bonding, where electrons are delocalized and free to move throughout the metal's structure.
Step-by-step explanation:
The bonding that takes place between atoms of copper (Cu-Cu) is metallic bonding. This type of bonding is characteristic of solid metals like copper, in which the metal atoms are bonded to several neighboring atoms. In metallic bonds, the electrons are delocalized, meaning that they are free to move throughout the entire structure of the metal. This electron mobility provides metals with their unique properties such as conductivity and malleability.
Metallic bonding is different from ionic bonding, which usually occurs between metals and nonmetals and involves the transfer of electrons. Likewise, it differs from covalent bonding, which typically involves the sharing of electrons between two nonmetal atoms. In the case of two copper atoms, they are of the same metal element and thus form a metallic bond.