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[-] pHr34kY@lemmy.world 12 points 5 hours ago* (last edited 2 hours ago)

Do you know what happens to hydrogen when the temp drops below 14K?

Yeah. Metal.

[-] TargaryenTKE@lemmy.world 1 points 56 minutes ago

That's hard af

[-] Gladaed@feddit.org 4 points 3 hours ago

Metallic hydrogen may also make up parts of Jupiter's core.

[-] Klear@lemmy.world 2 points 4 hours ago
[-] oo1@lemmings.world 7 points 6 hours ago

Plutonium is not a real element.

[-] NoSpotOfGround@lemmy.world 7 points 3 hours ago

It's a dwarf element.

[-] Artyom@lemm.ee 20 points 12 hours ago* (last edited 12 hours ago)

I'm confused, that's just a normal periodic table.

[-] threelonmusketeers@sh.itjust.works 17 points 8 hours ago

Found the astronomer.

[-] Swedneck@discuss.tchncs.de 12 points 9 hours ago

what? no, a normal periodic table has oxygen and carbon too!

[-] zea_64 21 points 6 hours ago
[-] Swedneck@discuss.tchncs.de 12 points 4 hours ago

i mean, i think most chemists are organic

few are free range though

[-] ornery_chemist@mander.xyz 9 points 12 hours ago

Iodine is a transition metal I will die on this hill.

Care to defend your position? Iodine is certainly not in the d-block...

[-] ornery_chemist@mander.xyz 1 points 1 hour ago* (last edited 1 hour ago)

The intended joke is that hypervalent iodine compounds like Dess-Martin periodinane flip between different oxidation states like you often see for transition metals. As an example, the mechanism usually drawn for oxidations by DMP is similar to those drawn for, e.g., PCC/Jones reagent, where the electrons removed from the substrate is "banked" at the metal center. Obviously, redox chemistry is not at all limited to transition metals, but I am often surprised at iodine's propensity to engage in it. A lot of research over the past decade or two has also developed redox catalysis with these reagents, reactivity which is commonly (though again not always) the purview of transition metals.

[-] Bonus@lemm.ee 74 points 18 hours ago

*The Periodic Table according to Michael Jackson

[-] lena@gregtech.eu 42 points 18 hours ago
[-] HEXN3T 53 points 18 hours ago

Ah yes, oxygen, my favourite metal

[-] quediuspayu@lemmy.dbzer0.com 5 points 6 hours ago

It sticks to a magnet, that means metal right?

[-] Bishma@discuss.tchncs.de 50 points 17 hours ago

Can't make fire without oxygen. That's pretty metal 🤟

[-] threelonmusketeers@sh.itjust.works 24 points 17 hours ago* (last edited 17 hours ago)

Can’t make fire without oxygen

Fluorine fires have entered the chat.

[-] Viking_Hippie@lemmy.dbzer0.com 15 points 15 hours ago

Fluorine fires have entered the chat.

Oh shit, someone call the fluorine fire department to save the chat!

call the fluorine fire department

Sometimes there is no such department, especially for the most vigorous fluorinating reagents like chlorine trifluoride: Sand Won't Save You This Time (Derek Lowe)

[-] Viking_Hippie@lemmy.dbzer0.com 4 points 6 hours ago

it can potentially go on to “burn” things that you would normally consider already burnt to hell and gone, and a practical consequence of that is that it’ll start roaring reactions with things like bricks and asbestos tile.

Yeah, that's a big fat nope from me 😬

[-] frigidaphelion@lemmy.world 3 points 16 hours ago

Lmao I think that particular emoji is sign language for love, not that that isn't appropriate here

[-] Bishma@discuss.tchncs.de 5 points 16 hours ago

Even apart from sign language, it's the hand sign for "hang loose" and not "throwing horns." But was as close as I could get.

[-] Morphit@feddit.uk 16 points 17 hours ago* (last edited 17 hours ago)

You think that's air you're breathing now?

[-] Tja@programming.dev 14 points 15 hours ago

What about metallic hydrogen in the core of planets?

Funnily enough, probably not a metal according to astronomers.

[-] niktemadur@lemmy.world 14 points 12 hours ago* (last edited 12 hours ago)

"Wait, they're ALL metals?"
"Always have been."

[-] Balthazar@lemmy.world 21 points 17 hours ago* (last edited 10 hours ago)

Physicists are notorious for approximating, and astronomers are even worse. But there are some subfields where they care about being more precise, and you maybe break the periodic table into a handful of elements plus alphas. And there's that one or two people getting exquisite spectral resolution and signal-to-noise on a few stars and measuring the abundance of Technetium or whatever.

[-] peoplebeproblems@midwest.social 17 points 15 hours ago

It's why I fucking love astrophysics. There's so much handwaving because so much information is observed.

But without the handwaving you can't find crazy ass things like nuclear fusion being behind the power of stars. You find these really big numbers everywhere that make the "normal stuff" negligible.

It not that the precision isn't important, it's just not always relevant at particular scales, like the scale of space.

[-] umbrella@lemmy.ml 7 points 15 hours ago

yOu aRe MadE oF sTardUst

[-] southsamurai@sh.itjust.works 4 points 17 hours ago
this post was submitted on 12 Feb 2025
510 points (100.0% liked)

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