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<p>[QUOTE="-jeffB, post: 4068161, member: 27832"]Osmium's a really weird one. Super-hard, super-dense, super-high melting point, super-low vapor pressure, and super-unreactive -- <i>except</i>, for some reason, with <i>air</i>. It sneers at concentrated acids (even aqua regia), but leave it sitting out, and it forms an oxide -- and that oxide is <i>volatile</i> (evaporates easily), and is an extremely powerful oxidizing agent, which makes it highly toxic.</p><p><br /></p><p>It got the name "osmium" because it stinks. If you get a sample for your element collection, keep it in a sealed bottle.[/QUOTE]</p><p><br /></p>
[QUOTE="-jeffB, post: 4068161, member: 27832"]Osmium's a really weird one. Super-hard, super-dense, super-high melting point, super-low vapor pressure, and super-unreactive -- [I]except[/I], for some reason, with [I]air[/I]. It sneers at concentrated acids (even aqua regia), but leave it sitting out, and it forms an oxide -- and that oxide is [I]volatile[/I] (evaporates easily), and is an extremely powerful oxidizing agent, which makes it highly toxic. It got the name "osmium" because it stinks. If you get a sample for your element collection, keep it in a sealed bottle.[/QUOTE]
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