What element was eventually found to produce the spectral lines in the Suns corona that were originally attributed to an unknown substance called "coronium"?

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     silicon
      hydrogen
      carbon
      helium
      lithium
asked Sep 20, 2012 in Astronomy by anonymous
    

1 Answer

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helium
answered Sep 22, 2012 by SkyStar ~Expert~ (2,855 points)

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