If N is Avogadro number, M is atomic weight and , the density, the number of free…

Physics · Class 12 · CBSECurrent Electricity

If N is Avogadro number, M is atomic weight and \(\rho\) , the density, the number of free electrons per unit volume of a monovalent metallic crystal can be expressed as

  1. \(\frac{\rho \mathrm{N}}{\mathrm{M}}\)
  2. \(\frac{\mathrm{N}}{\mathrm{ \mu M}}\)
  3. \(\frac{\mathrm{MN}}{\rho}\)
  4. \(\frac{\rho M}{N}\)

Answer

(A) N M

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