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Mercury(II) oxide
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<p>Mercury(II) oxide, also called mercuric oxide or simply mercury oxide, is the <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the formula <a href="/facts/Mercury_(element)/WlxfoHva">Hg</a><a href="/facts/Oxygen/acyn6o8r">O</a>. It has a red or orange color. Mercury(II) oxide is a solid at room temperature and pressure. The mineral form <a href="/facts/Montroydite/HeNdMe0A">montroydite</a> is very rarely found. </p>