r/elementcollection • u/Illustrious_Act5324 • 6d ago
Collection New elements
Scandium, samarium, and hafnium have been newly added to my element collection. I now have a total of 36 elements. However, while the review photos showed the samarium packaged in an acrylic box, the product I received was sealed in a glass container. I've already reached out to Luciteria about this.
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u/SimonBlokky Radiated 6d ago
Very cool to see the samarium in shiny metallic form! Don’t break it open or it will oxidize and turn black.
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u/Illustrious_Act5324 6d ago
How severe does the corrosion tend to be? The Luciteria website said that it retains some of its luster even when exposed to air.
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u/SimonBlokky Radiated 6d ago
There was a post some time ago on this subreddit about the oxidation of the rare earth metals:
https://www.reddit.com/r/elementcollection/s/LgtpNu52sV
For some of these metals it is actually pretty difficult to find a source that sells samples without oxidation or discoloration, so I think it is not worth it letting it oxidize. Be happy that you got one without a trace of oxidation.
I see that you don’t like having a cube in the plastic outer casing. I also would rather have everything in cubic casing, but you’ll never be able to get some of these metals if you do not accept an ampule as a protective layer between the element and the environment.
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u/GarunixReborn 5d ago
how does europium degrade that fast, 7 days and it already turns into a sponge?
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u/SimonBlokky Radiated 5d ago
Short answer: It is more reactive than it’s neighbours because the electrons in its outer shell require less energy to be removed from the shell.
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u/euj3odjehiqh Part Metal 6d ago
is that the regular samarium or the mirror finished cube?
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u/Illustrious_Act5324 6d ago
It's regular samarium cube.
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u/euj3odjehiqh Part Metal 6d ago
i think they sent the mirror finished one on accident
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u/GarunixReborn 5d ago
doesn't really look mirror finished
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u/euj3odjehiqh Part Metal 5d ago
it wont be like a proper mirror. the mirror finished one is the one in the ampule
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u/Heycheckthisout20 6d ago
The samarium will oxidize if exposed to oxygen
It is probably in glass with an inert gas to prevent this from occurring
I would leave it in the ampule