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Chemist here: all the reds are correct but it would take so much time to explain why so many of the greens are super concerning. Every time I see this reposted it's so concerning...I should just spend the 17 minutes and save a copy pasta response of everything horribly wrong with this.
Edit: page 1 on the SDS for pure sulfur.
I'm pretty sure that licking pure magnesium would make your tongue explode too.
I would not be willing to lick calcium, too
Definitely not licking pure lithium, sodium, or any of the alkali (s-block) metals. My tongue is wet. That shit explodes in water, yo.
I wonder if you'd get a sort of leidenfrost effect limiting the extent of damage.
I'm not going to test that though.
I have elemental magnesium (4 ~50g ingots, I keep it in my library in a barely-sealed ziplock). it's shelf stable and doesn't react violently with water. Want me to try licking it and let you know? (hint: at worst it'll make a minuscule amount of milk of magnesia)
ETA: Would I stick my tongue in pyrophoric magnesium powder? No, and you wouldn't do that with pyrophoric aluminum or zinc powders, either, but that doesn't stop me from using (or licking) alumnum foil. Proof: https://invidious.darkness.services/watch?v=Q_4I30Nz_b0
The LD 50 for sulfur is 2000 MG per kilogram body weight. So you'd probably be fine licking it. You can't just go off the msds.
My degree is in bio but if I'm remembering my coursework correctly, this is the legend that's supposed to be on it.
If someone's licking any of the transuranic elements I'm not sticking around to watch.
Some stuff should simply not exist in a lickable quantity.
I see we're continuing the trend of scaring literally everyone when a scientist gets excited.
From my elementary knowledge of chemistry:
I had to go looking for Mercury and Lead and sure enough they look about right.
Column 1 reacts with water so you bet that'll hurt. Hydrogen needs a boost to start reacting with oxygen so no naked flame is recommended.
Anything in column 7 are desperate to rip electrons away from molecules so yes, permanent damage to your tongue and mouth.
Uranium is alright if you lick it once. A guy ate uranium cake once on TV.
The 'Please reconsider' lot seem to be a good way to die a horrible death by radiation.
Tc I believe is technetium which is radioactive and emits gamma rays, perhaps not soluable so stays in your body and you become gamma-man.
Needs a "how fast can you move your tongue?" label for the unstable elements.
"Please, tell me how!"
Is it really that bad to lick something that disappears after nanoseconds?
It doesn't disappear, it becomes a different element.
Well, yeah. I guess it depends on into what they transform.
Oh yeah just lick the carbon. It’s probably fine.
It is. Activated carbon is used to treat diarrhoea, you basically swallow a chunk of carbon that absorbs any moisture it comes across
Don't lick carbon nano tubes or buckyball. Also in general carbon powder can be a particulate inhalation issue.
The table is about licking specifically. It’s not a breathability table. Just so that is clear.
Activated carbon is also used in water treatment to remove taste/odours and many organic pollutants.
Not moisture but reactive molecules. (I mean, many forms probably do still absorb a good bit but) I forgot the exact chemistry but "activated" means chemically reactive. It binds with all sorts of reactive molecules, like toxins and many other things.
Have you never licked a diamond before? You’re missing out.
Tastes like a campfire.
Elemental mercury isn't very bioavailable so licking the surface of a pool of mercury isn't going to hurt you much if at all. (Assuming you just do it once). Plus the density of mercury is going make it hard for you to slurp up a significant quantity the stuff anyway.
If you want to know about the horrible potential for mercury to mess you up look for stories about dimethyl mercury exposure. Its the fat soluble varieties that give mercury it's reputation.
The story of the professor who was studying dimethyl mercury is terrifying
i'm not a chemist but is this licking the most common molecule form or the atomic variety
O₂ is safe but i don't think O is
I think it's framed in the context of: "How dangerous would a single molecule be to a human?". In that context, I would say O is safe, only because our body naturally destroys the radical oxygen molecules every day that we create with our anti-oxidants.
True, in a larger quantity than our body can handle, it's extremely toxic; but a single molecule would probably not be too bad.
But I do agree, it shouldn't be Green. It should be Yellow at least.
I'm no chemist but - can you lick a gas?
Edit: pick
Define "lick".
Just freeze them
Same concern. It's even arguable you can only lick solids (and lap liquids). This would make hydrogen a Must Not Lick, for example, if we could only consider solid forms.
Mid at best. There's a lot of stuff you don't want anywhere near your mouth on there.
Beryllium is mostly only toxic when you breathe it in (there's even a special disease you get from it), but as a solid, it's pretty safe afaik.
Not that I recommend it.
Licking bismuth would be very very very very very bad
Why? Bismuth is pretty harmless from what I can find. It's not great but it's way better than lead (which it replaced in a lot of applications). Based on what I read, bismuth probably wouldn't hurt you if you gave it a lick.
Are you thinking of benzene?
Since the green isn't labelled "yes you can" I stopped reading...
I mean, technically you can lick any of them...
(Once)
Can you, though? Can you lick a gas? Am I licking the atmosphere when I stick my tongue out?
Plenty of them are also so rare that there isn't enough of them to form any lickable matter; solid, liquid or gaseous.
Some have such an incredibly short half-life, you cannot lick it before it decays into something else.