Assertion: astatine | /r/CapableOf | react with nitrogen
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text: The target is kept under a chemically neutral nitrogen atmosphere - I had earlier had a clarify on this, on the basis that astatine is said above to react with nitrogen, but I'm thinking this isn't going to be a concern since almost all astatine formed will not be on the surface (as well as that the conditions are probably not ones under which nitrogen and astatine react, given how stable nitrogen tends to be).