Calculate the fraction of atom sites that are vacant for copper at its melting temperature of C (1357 K). Assume an energy for vacancy formation of 0.90 eV/atom

Respuesta :

The fraction of the atom that are vacant for the copper atom at its melting temperature is [tex]4.57\times 10^{-4}[/tex].

Fraction of the vacant atom

The fraction of the atom that are vacant for the copper atom at its melting temperature is  determined using the equation below;

[tex]\frac{N_v}{N} = e^{(\frac{-Q_v}{KT} )[/tex]

where;

  • Qv is the vacancy formation of the copper = 0.9 eV/atom
  • K is Boltzmann constant = 8.62 x 10⁻⁵ eV/atom.K
  • T is the temperature = 1357 K

The fraction of the atom that are vacant for the copper atom at its melting temperature is calculated as follows;

[tex]\frac{N_v}{N} = e^{(\frac{-0.9}{8.62 \times 10^{-5} \times 1357} )}\\\\\frac{N_v}{N} = 4.57\times 10^{-4}[/tex]

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