enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Noble gas - Wikipedia

    en.wikipedia.org/wiki/Noble_gas

    The noble gases have also been referred to as inert gases, but this label is deprecated as many noble gas compounds are now known. [6] Rare gases is another term that was used, [ 7 ] but this is also inaccurate because argon forms a fairly considerable part (0.94% by volume, 1.3% by mass) of the Earth's atmosphere due to decay of radioactive ...

  3. Noble gas compound - Wikipedia

    en.wikipedia.org/wiki/Noble_gas_compound

    Structure of a noble-gas atom caged within a buckminsterfullerene (C 60) molecule. Noble gases can also form endohedral fullerene compounds where the noble gas atom is trapped inside a fullerene molecule. In 1993, it was discovered that when C 60 is exposed to a pressure of around 3 bar of He or Ne, the complexes He@C 60 and Ne@C 60 are formed ...

  4. Chemically inert - Wikipedia

    en.wikipedia.org/wiki/Chemically_inert

    The noble gases (helium, neon, argon, krypton, xenon and radon) were previously known as 'inert gases' because of their perceived lack of participation in any chemical reactions. The reason for this is that their outermost electron shells (valence shells) are completely filled, so that they have little tendency to gain or lose electrons.

  5. Xenon - Wikipedia

    en.wikipedia.org/wiki/Xenon

    Xenon is a member of the zero-valence elements that are called noble or inert gases. It is inert to most common chemical reactions (such as combustion, for example) because the outer valence shell contains eight electrons. This produces a stable, minimum energy configuration in which the outer electrons are tightly bound. [60]

  6. Industrial gas - Wikipedia

    en.wikipedia.org/wiki/Industrial_gas

    The noble gases are all monatomic. In the industrial gases industry the term "elemental gases" (or sometimes less accurately "molecular gases") is used to distinguish these gases from molecules that are also chemical compounds. Radon is chemically stable, but it is radioactive and does not have a stable isotope.

  7. List of gases - Wikipedia

    en.wikipedia.org/wiki/List_of_gases

    This list is sorted by boiling point of gases in ascending order, but can be sorted on different values. "sub" and "triple" refer to the sublimation point and the triple point, which are given in the case of a substance that sublimes at 1 atm; "dec" refers to decomposition. "~" means approximately.

  8. Category:Noble gases - Wikipedia

    en.wikipedia.org/wiki/Category:Noble_gases

    Noble gas compounds (5 C, 3 P) O. Oganesson (1 C, 3 P) R. Radon (2 C, 13 P) X. Xenon (2 C, 8 P) Pages in category "Noble gases" The following 14 pages are in this ...

  9. Nonmetal - Wikipedia

    en.wikipedia.org/wiki/Nonmetal

    Chemically, the noble gases exhibit relatively high ionization energies, negligible or negative electron affinities, and high to very high electronegativities. The number of compounds formed by noble gases is in the hundreds and continues to expand, [ 131 ] with most of these compounds involving the combination of oxygen or fluorine with either ...