Defect chemistry may be the examine of position defects in imperfect crystals. These consist of vacancies, interstitial atoms or ions, trace elements, electrons, or holes or some other deviation from the construction of a wonderful crystal. Even absolutely pure crystals have level defects at any temperature earlier mentioned absolute zero. https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share