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Topic: Helium atomic radius  (Read 6529 times)

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Offline Gosseyn

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Helium atomic radius
« on: March 15, 2009, 05:54:04 PM »
I saw this in a table in an article.  Atomic radius of the helium atom: 31000 10-15m.  Would that translate to .000000000031000?  What does the m symbol mean?

Online Borek

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Re: Helium atomic radius
« Reply #1 on: March 15, 2009, 06:08:22 PM »
m usually means meter.
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Offline Gosseyn

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Re: Helium atomic radius
« Reply #2 on: March 15, 2009, 06:15:46 PM »
m usually means meter.

Actually the heading of the column said radius of an atom @10-15m, and under it were various elments, and the helium figure was 31000. I think hydrogen was 53000.  And so on.  Does that make any difference?

Offline Arkcon

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Re: Helium atomic radius
« Reply #3 on: March 15, 2009, 07:58:50 PM »
Actually the heading of the column said radius of an atom @10-15m, and under it were various elments, and the helium figure was 31000. I think hydrogen was 53000.  And so on.  Does that make any difference?

It still means meter, yes.  It definitely means there is a difference between the two, however.
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