Class 12 Chemistry The Solid State Metallic Solids

Metallic Solids

  • In these solids positive ions is surrounded by mobile free electrons and are evenly spread all over the crystal.

  • Each metal atom donates one or more electrons to the group of mobile electrons which increases the electrical and thermal conductivity of the metallic elements.
  • Application of electric field makes these electrons flow through the linkage of positive ions.
  • Whereas application of heat to one portion of a metal makes the thermal energy spread uniformly throughout by free electrons.
  • Presence of free electrons in metals makes them lustrous, malleable and ductile. For example, Cr, Fe etc.

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