Answer the following question given this paragraph: 

A metallic bond is the force of attraction between a positive metal ion and the valence electrons that surround it—both its own valence electrons and those of other ions of the same metal. The ions and electrons form a lattice-like structure. Only metals, such as the copper pictured in the Figure below , form metallic bonds.


Q: What is the force of attraction between a positive metal ion and valence electrons?


A:
metallic bond