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The main defect in stoichiometric CsI is the Schottky defect. The fraction of lattice sites that...

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Chemistry

The main defect in stoichiometric CsIis the Schottky defect. The fraction of lattice sites that exhibitSchottky defects as a function of temperature, is as follows: 1.08x 10exp-16 at 300 K, 1.06 x 10exp-12 at 400 K, 2.63 x 10exp-10 at500K, 1.04 x 10exp-8 at 600 K, 4.76 x 10exp-6 at 900 K. Showwhether the formation of Schottky defects is given by an Arrhenius(or Boltzmann) expression and, if so, evaluate the enthalpy offormation of one Schottky defect and 1 mol of Schottky defects.

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fraction of lattice sites that exhibit Schottky defects Temperature K 108 X 1016 300 106 X 1012 400 263 X 1010 500 104 X 108 600 476 X 106 900 Arrhenius expression for Schottky defects ns N exp H 2kT    See Answer
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