Answer:
Metallic bond
Explanation:
Metallic bond involves the attraction between metal cations and the delocalized electrons. The valence electrons in metallic atoms are usually unstable because of the shielding effect of other electron shells. When this happens, the valence electrons leave the atom and become delocalized (basically move around without belonging to any atom). These delocalized electrons carry electric charges when electric current is passed through the metal - meaning they allow metals to conduct electricity.
