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Reference.org
Lead(II) oxide
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<p>Lead(II) oxide, also called lead monoxide, is the <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the molecular formula <a href="/facts/Lead/EYljasJN">Pb</a><a href="/facts/Oxide/DXtoVe1C">O</a>. It occurs in two <a href="/facts/Polymorphism_(materials_science)/bu2tqsB9">polymorphs</a>: <a href="/facts/Litharge/qCyjHJ83">litharge</a> having a <a href="/facts/Tetragonal_crystal_system/12Aop255">tetragonal crystal structure</a>, and <a href="/facts/Massicot/U5rgRMeu">massicot</a> having an <a href="/facts/Orthorhombic_crystal_system/3zo4F8P0">orthorhombic crystal structure</a>. Modern applications for PbO are mostly in <a href="/facts/Lead/EYljasJN">lead</a>-based industrial <a href="/facts/Lead_glass/FtgPe6r2">glass</a> and industrial ceramics, including computer components. </p>