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Topic: Wow, even helium not that noble :)  (Read 3404 times)

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Offline Borek

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Wow, even helium not that noble :)
« on: February 07, 2017, 02:48:59 PM »
http://www.nature.com/nchem/journal/vaop/ncurrent/full/nchem.2716.html

Na2He, under very high pressures. A real compound, not helium atoms trapped in interatomic spaces.
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Offline Corribus

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Re: Wow, even helium not that noble :)
« Reply #1 on: February 07, 2017, 05:35:12 PM »
It's been a good month for diamond anvils - first metallic hydrogen, now this!
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What men are poets who can speak of Jupiter if he were like a man, but if he is an immense spinning sphere of methane and ammonia must be silent?  - Richard P. Feynman

Offline Irlanur

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Re: Wow, even helium not that noble :)
« Reply #2 on: February 08, 2017, 04:48:19 AM »
While I share the scientific enthusiasm that this was actually observed experimentally, I never really understood while these things seem to be such a huge surprise...
The inertness of the noble gases is just a "rule", it's not a theoretical necessity.
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Offline AWK

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Re: Wow, even helium not that noble :)
« Reply #3 on: February 08, 2017, 05:46:45 AM »
Some 20 years ago I read preprint (though never published) concerning quantum-chemical calculations.
Authors claimed that He2O if existed would be the hardest material on the earth.
Now we may expect K2Ar and K2Ne.
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