No, its not impossible. You can make it in the lab without too much difficulty if you have liquid nitrogen. Just not sold like this and you can't really contain it in a practical vessel as the pressure at room temperature would be too extreme, you store liquids or compressed gases.
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Is argon powder actually impossible? Of course it couldn't exist as pictured but below 80K does anything prohibit it?
No, its not impossible. You can make it in the lab without too much difficulty if you have liquid nitrogen. Just not sold like this and you can't really contain it in a practical vessel as the pressure at room temperature would be too extreme, you store liquids or compressed gases.