Praseodymium Metal Cube 99.5%

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Praseodymium Metal Cube 99.5%

from 49.00

When it comes to pure metal cubes, praseodymium is a special case given its affinity to oxidation. Much like an iron nail left out in the open, Pr rusts too except it does so in an off-white powdery mess that left unchecked will turn the whole object into a puffy pile of PrO2. So protecting the surface with a sealant is a must if we are to enjoy our little cube of this exotic metal. Oil works, yeah, but it's a little messy and that wily oxygen atom will still find its way to link up with the outermost layers of praseodymium atoms turning its surface from a steely gray (2nd photo) to jet black. If you wanted to get fancy you could lock it up under argon but I think only the truly hardcore have argon tanks laying around for this purpose. In any case, it's not like cesium. It won't tarnish right before your eyes. Wipe off the oil, play around with it, show it off at the office if you want and watch your buddies shrug as you do your best to show them the significance of holding this nearly unpronounceable metal in their hands! Just don't forget it in a drawer somewhere for weeks or you'll wonder who played the prank of spilling all that flour in there. Just plop it back into the oil and that's all there is to it.

Weight of each 10mm cube is 6.75±0.05g

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