Final answer:
The electron-sea model describes the bonding in metals. Metal atoms contribute their valence electrons to form an electron "sea" that is delocalized or shared among all the atoms. The metal is held together by the attraction between the metal cations and the sea of electrons.
Step-by-step explanation:
The simplest model used to describe the bonding in metals is the electron-sea model. In terms of this model, all the metal atoms contribute their valence electrons to form an electron "sea" so that the electrons are delocalized or shared among all the atoms. The metal is held together by the attraction between the metal cations and the sea of electrons.