Helium is a chemical element with symbol He and atomic number 2. It is a
colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the
noble gas ...
Element Helium (He), Group 18, Atomic Number 2, s-block, Mass 4.003. Sources,
facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
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The Element Helium - Basic Physical and Historical Information.
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History. From the Greek word helios, the sun. Janssen obtained the first evidence
of helium during the solar eclipse of 1868 when he detected a new line in the ...
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Helium's discovery, interesting facts, and properties - plus informative videos and
comprehensive data tables.
Jan 26, 2015 ... First discovered in the corona surrounding the sun and later found in gases
leaking from Mount Vesuvius, helium is the second-most abundant ...
This WebElements periodic table page contains the essentials for the element