Which metal is present in cinnabar ore?

Explanation

Schottky defect::The Schottky defect is simply a vacancy defect in ionic solids. This is due to missing of equal number of positive and negative ions. It is more common in ionic compounds with high coordination number and in the ionic solids which contain positive and negative ions of equal size. This defect decreases density of the substance.
eg `NaCl, KCl, CsCl, AgBr`.