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>Posted on 21 Jun 1995 at 23:52:55 by w wittman
>Re: Missing Helium

>>Hydrogen is even more "energetic" but is a bit bigger I think
>>and also diffuses slower through most solids because it will form
>>chemical bonds to the locals (even to metals).
>>john
>>cc015012@br*.br*.ed*
>
>it's my understanding that Hydrogen is the smallest of all atoms

It is. However, it takes two Hydrogen atoms to make a Hydrogen
gas molecule. Helium gas on the other hand is composed of single He
atoms bouncing about. All I meant was that the diatomic H2 molecule
is physically bigger than the He atom.

john

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