Bond in which valence electrons are not bound to any particular atom in the solid is known as Metallic Bond.
In metallic bonds, electrons of valence shell do not belong to any any single atom or ion. They exists as cloud of electrons and they are free to drift.
Metallic bonding is responsible for shiny surface, malleability, and their conductivities of metals
The metallic bond becomes weak at melting point and get completely broken at boiling points.
The factors that affect the strength of metallic bonds are number of delocalized electrons, Magnitude of positive charge and Ionic radius of the cation.
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