The electron sea model is a model of metallic bonding in which cations are considered to be fixed points within a mobile 'sea' of electrons.
The electron sea model pictures the electrons on the surface of a metal being free to move from one atom to another. ... This means that in metallic bonding for the metal atom to become more stable it must release its electron density without the electrons being transferred to another atom.
Metallic bonds are formed between metal compounds and are very strong. These links are explained by the "sea model of electrons", where valence electrons are ceded by each metal atom, becoming positive ions forming a three-dimensional crystalline network. These electrons move forming a network ("sea") that allows the union of the positive ions formed.
