Metallic bond properties :
The metal bond represents a particular type of. As its name suggests, this connection occurs between the that make up , whether they are or .
Metal bond and free electrons
In the case of the metal bond, a large number of atoms lose their– located on the last – and occupy the classical positions of a (vertices, centers of faces, etc.). . Navigating through the skeleton of crystalline structure, the released valence – called free electron – are pooled for all atoms. They form a sort of “ electron ” in constant and disordered .
The metal bonds are weaker than theand the .
Metal bond and physical properties of metals
Somecan be explained by the specific character of the metal bond. For example :
- the tend to shine because the are more easily absorbed by free electrons;
- the permanent movement of electrons at the heart of “electron gas” explains the good electrical and thermal of metals;
- the metals are malleable because the presence of free electrons allows them to avoid strong repulsions between .