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Asked by jenniferm to Karen on 15 Nov 2013.
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Karen McCarthy answered on 15 Nov 2013:
Helium is one of the chemical elements of the Periodic Table (number 2), and is a very interesting one too, because it is the 2nd lightest chemical, and also the 2nd most abundant!
It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that is the head of the noble gas group in the periodic table. Its boiling and melting points are the lowest among the elements and it exists only as a gas except in extreme conditions.
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jenniferm commented on :
if dinosaurs were still alive today would we be alive now ?