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Uranium monophosphide
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<p>Uranium monophosphide is a <a href="/facts/Chemical_compound/37FXqqtv">compound</a> of <a href="/facts/Uranium/n2sGWBzU">uranium</a> and <a href="/facts/Phosphorus/27xCeIqs">phosphorus</a>, synthesized from heating metal uranium and white phosphorus: </p> 4 U + P4 → 4 UP <p>It is a potential <a href="/facts/Nuclear_fuel/8RhAomlJ">nuclear fuel</a>. </p><p>In air, a thin <a href="/facts/Glass/hezRsAGf">glassy</a> surface layer <a href="/facts/Passivation_(chemistry)/tPADJj5G">protects the compound from oxidation</a>; over the course of months after synthesis, this layer develops a metallic sheen. </p>