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To: techdiver@opal.com
Subject: noble gases (was: Re: Helium Sources)
From: "A.APPLEYARD" <A.APPLEYARD@fs*.mt*.um*.ac*.uk*>
Date: Tue, 27 Sep 1994 08:58:34 GMT

  Richard Pyle <deepreef@bi*.bi*.ha*.or*> wrote on Mon 26 Sep 1994
14:00:18 +22305714 (HST) (Subject: Re: Helium Sources):-

  > ... there are no compounds with bound helium (or any other of the "Noble
Gases", for that matter).
  Oh yes there are! XeF2, XeF4, XeF6, XeO3, XeO4, H2XeO4, Na4XeO6, KrF2, RnF2,
etc etc; the first was XePtF6 in 1962. Helium & neon & argon won't combine,
but krypton and xenon and radon sure will!, with the right catalyst. Xenon
ain't so noble after all, when Miss Fluorine's free for the taking!

  > Ultimately, I suspect virtually all of earth's helium came from fusion of
hydrogen isotopes in the sun (or other stars). ...
  Much underground helium started as alpha particles emitted by heavy element
radioactivity (and the heat of the inside of the Earth is produced thus also).

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