text: The Born equation can be used for estimating the electrostatic component of Gibbs free energy of solvation of an ion. It is an electrostatic model that treats the solvent as a continuous dielectric medium (it is thus one member of a class of methods known as continuum solvation methods).
  It was derived by Max Born.
  where:
  *N =  Avogadro constant
  *z = charge of ion
  *e = elementary charge, 1.6022 C
  *&epsilon; = permittivity of free space
  *r = effective radius of ion
  *&epsilon; = dielectric constant of the solvent