Helium
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Title: Helium

Essay Details:

Subject: Science
Author: Gail C
Date: May 20, 2016
Level: University
Grade: B
Length: 5 / 1202

Essay text:

Helium is odourless and colourless and remains as a gas at room temperature; this chemical element is abbreviated as He. Helium has two protons in its nucleus whereas the atomic number of helium is 2 and is listed in group VIII of the periodic table. As a noble gas helium is almost chemically inert, unreactive. After hydrogen, helium is the most abundant element in the universe. During an eclipse in 1868, French astronomer Pierre Janssen discovered helium. After Helium was proven to be an element it was named by a British chemist Sir Edward Frankland and British astronomer Sir Joseph Norman Lockyer...

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