[Gosseyn]

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?

[Borek]

m usually means meter.

[Gosseyn]

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?

[Arkcon]

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.