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Noble gas - Etymology | A Wisdom Archive on Noble gas - Etymology | | Noble gas - Etymology A selection of articles related to Noble gas - Etymology | |
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Noble gas, Noble gas - Applications, Noble gas - Chemistry, Noble gas - Etymology, Noble gas - Physical Properties
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ARTICLES RELATED TO Noble gas - Etymology | |
| | |  Noble gas - Etymology: Encyclopedia II - Noble gas - ChemistryBecause of their unreactivity, the noble gases were not discovered until 1868, when helium was detected spectrographically in the Sun. The isolation of helium on Earth had to wait until 1895. The noble gases have very weak inter-atomic forces of attraction, and consequently very low melting points and boiling points. This is why they are all gases under normal conditions, even those with larger atomic masses than many normally solid elements.
The periodic table contains an empty space under radon, with atomic number 118. This indicates the existence, albeit short-lived, of an as yet undiscovered noble gas, which ...
See also:Noble gas, Noble gas - Etymology, Noble gas - Chemistry, Noble gas - Applications, Noble gas - Physical Properties Read more here: » Noble gas: Encyclopedia II - Noble gas - Chemistry |
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