XENON

The xenon is a chemical element of the periodic table which symbol is Xe and his atomic number 54. Odourless, very heavy, colorless rare gas, the xenon is present in the terrestrial atmosphere
The xenon is a member of the elements of valency zero so called rare or inert gases.
The xenon (ξενόν ,that in Greek "stranger" means) was discovered by William Ramsay and Morris Travers in 1898 in the residues obtained on having evaporated the components of the liquid air.

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