Definition of Metallic compounds
A metallic compound is a compound that contains one or more metal elements.
Metallic compounds are good conductors of heat and electricity.
Metallic compounds are very malleable and can be rolled into sheets and such and not break.
Metallic compounds are also ductile, which means they can be made to form wires.
Metallic bonding constitutes the electrostatic attractive forces between the delocalized electrons, called conduction electrons, gathered in an "electron sea", and the positively charged metal ions. Understood as the sharing of "free" electrons among a lattice of positively charged ions (cations), metallic bonding is sometimes compared with that of molten salts; however, this simplistic view holds true for very few metals. In a more quantum-mechanical view, the conduction electrons divide their density equally over all atoms that function as neutral (non-charged) entities. Metallic bonding accounts for many physical properties of metals, such as strength, malleability, ductility, thermal and electrical conductivity, opacity, and luster.
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