Definitions for atomic number 2
This page provides all possible meanings and translations of the word atomic number 2
helium, He, atomic number 2(noun)
a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)
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"atomic number 2." Definitions.net. STANDS4 LLC, 2015. Web. 5 Mar. 2015. <http://www.definitions.net/definition/atomic number 2>.