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Metallic bonding is the electromagnetic interaction between loosely held, delocalized, valence electrons, gathered in an "electron sea", and the metallic ...
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Metallic bonding is the electromagnetic interaction between loosely held, delocalized, valence electrons, gathered in an "electron sea", and the metallic nuclei within metals. This type of bonding is seen as the sharing of "free" electrons among a lattice of positively- charged ions (cations).
Metals have characteristic properties such as:
Delocalized electrons.
All the characteristic metallic properties can be explained on the basis of the electron.
Metallic Luster: When light falls on the surface of the metal, the loosely held electrons absorb photons of light. They get promoted to higher energy levels (excited state), oscillating at a frequency equal to that of the incoming light. These oscillating electrons readily return from the higher to the lower levels of energy by releasing energy. Light appears to be reflected from metal surface and the surface acquires a shining appearance, which is known as metallic luster.
Electrical conductivity: The presence of mobile electrons causes electrical conductivity of a metal. When a potential difference is applied across a metal, the free mobile electrons in the metallic crystal move toward the positive electrode. The electrons coming from the negative electrode simultaneously replace these electrons. Thus, the metal maintains the flow of