And stable structure
Zinc Oxide is an inorganic compound which is also known as Calamine or Zinc White. It is naturally found as a mineral zincite. It is mostly produced synthetically. It is a chemical compound with mild astringent and antiseptic action which works as a topical protectant. It has wide applications in bandages, ointments, pastes, and dental cement.
Zinc white crystallizes mainly in two forms viz cubic zinc blende and hexagonal wurtzite. The most common and stable structure at ambient conditions is wurtzite. Zincblende can be stabilized by growing zinc oxide on substrates which has a cubic lattice structure. The oxide and zinc centres are tetrahedral.
Calamine is a white solid which is insoluble in water and has no smell. Crude zinc oxide appears yellow-grey in colour which exists in a granular solid form with no odour. In its natural form, it is obtained as a mineral zincite which consists of manganese (Mn) and some other impurities which makes it appear yellow-red colour. In its crystalline form, it is thermochromic which on heating in the presence of air changes its colour from white to yellow and on cooling it turns white in colour. It is an amphoteric oxide which is insoluble in water. It dissolves in acids and alkalis.
People allergic to ZnO should not use the products made of zinc oxide. It may lead to skin irritation, redness of the skin or worsening rashes.
Learn more about the chemical behaviour and importance of Zinc oxide (ZnO) with the expert faculties at StudySolver.
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