SCH4U - Electron-Sea Model of Metals

If you try to draw an electron-dot structure for a metal, you’ll quickly realize that there aren’t enough valence electrons available to form an electron-pair bond between every pair of adjacent atoms. Sodium, for example, which has just one valence electron per atom (3s^1), crystallizes in a body-centered cubic structure in which each Na atom is surrounded by eight nearest neighbors (Section 10.8). Consequently, the valence electrons can’t be localized in a bond between any particular pair of atoms. Instead, they are de-localized and belong to the crystal as a whole.

In the electron-sea model, a metal crystal is viewed as a three-dimensional array of metal cations immersed in a sea of de-localized electrons that are free to move throughout the crystal. The continuum of de-localized, mobile valence electrons acts as an electrostatic glue that holds the metal cations together.





Canada Online Education

Student Life


Arkana Education

Arkana Finance

Arkana Housing

Arkana Tutoring

Arkana Academy

All Rights Reserved © Arkana International Group