Defect chemistry will be the study of level defects in imperfect crystals. These incorporate vacancies, interstitial atoms or ions, trace aspects, electrons, or holes or almost every other deviation from the framework of a great crystal. Even Unquestionably pure crystals comprise point defects at any temperature higher than complete zero. https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share