Class 12 Chemistry The Solid State Conduction of Electricity in Metals

Conduction of Electricity in Metals

  • A conductor conducts electricity due to the movement of electrons or ions.

  • Metals conduct electricity both in solid state as well as molten state.
  • The conductivity of metals depends upon the number of valence electrons available per atom.
  • The atomic orbitals of metal atoms form molecular orbitals that are close in energy to each other as to form a band.
  • Partial filling or overlapping with a higher energy unoccupied conduction band enables the electrons to flow easily under an applied electric field.
  • This results in conductivity of metals.

If the gap between valence band and the conduction band is large, electrons cannot jump to it and such a substance has very low conductivity that makes it behave like an insulator

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