Strength of Metallic Bonds
What holds a metallic bond together is the attraction between the
positive kernels and the negative electron sea. The strength of the
metallic bond is derived primarily from the amount of the charges in the
system.
  • The larger the amount of positive charge on the metallic nuclei,
    the greater the strength of the metallic bond.
  • The greater the number of valence electrons contributed to the
    electron sea, the greater the strength of the metallic bond.
Malleability and Ductility
Metallic bonds are omni-directional. They do not have any geometric requirements which
need to be fulfilled. Think of the marbles surrounded by water, in a box. The marbles can
be pushed anywhere within the box and the water will follow them, always surrounding
the marbles. Because of this unique property, metallic bonds can maintain their existence
when pushed and pulled in all sorts of ways. As a result, metals are known for their
flexibility -- thus they are malleable and ductile.
  • If a metal is subjected to a force, the kernels can slide around on the layer of
    electrons.
  • As the kernels move to new positions, the bonds will not break, because of their
    omni-directional nature.
Metallic Bonds  - Malleablilty and Ductility