Calculate the number of Schottky defect per cubic meter in potaium chloride at 500oC. The energy required to form each Schottky defect i 2. 6 eV, while the denity for KCl (at 500oC) i 1. 955 g/cm3. Important information:

· Avogadro’ number (6. 023 x 1023 atom/mol);

· Atomic weight for potaium and chlorine (i. E. , 39. 10 and 35. 45 g/mol), repectively