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  2. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Unsolved Problems in Nanotechnology: Chemical Processing by Self-Assembly - Matthew Tirrell - Departments of Chemical Engineering and Materials, Materials Research Laboratory, California NanoSystems Institute, University of California, Santa Barbara [No doc at link, 20 Aug 2016]

  3. 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 ...

  4. Neil Bartlett (chemist) - Wikipedia

    en.wikipedia.org/wiki/Neil_Bartlett_(chemist)

    Neil Bartlett was born on 15 September 1932 in Newcastle-upon-Tyne, England. [1] Bartlett's interest in chemistry dated back to an experiment at Heaton Grammar School when he was only eleven years old, in which he prepared "beautiful, well-formed" crystals by reaction of aqueous ammonia with copper sulfate. [2]

  5. Diatomic molecule - Wikipedia

    en.wikipedia.org/wiki/Diatomic_molecule

    A periodic table showing the elements that exist as homonuclear diatomic molecules under typical laboratory conditions. The only chemical elements that form stable homonuclear diatomic molecules at standard temperature and pressure (STP) (or at typical laboratory conditions of 1 bar and 25 °C) are the gases hydrogen ( H 2 ), nitrogen ( N 2 ...

  6. Period (periodic table) - Wikipedia

    en.wikipedia.org/wiki/Period_(periodic_table)

    Chemically, helium behaves like a noble gas, and thus is taken to be part of the group 18 elements. However, in terms of its nuclear structure it belongs to the s-block , and is therefore sometimes classified as a group 2 element , or simultaneously both 2 and 18.

  7. Category:Noble gases - Wikipedia

    en.wikipedia.org/wiki/Category:Noble_gases

    Pages in category "Noble gases" The following 14 pages are in this category, out of 14 total. This list may not reflect recent changes. ...

  8. Neon - Wikipedia

    en.wikipedia.org/wiki/Neon

    Neon is the second-lightest noble gas, after helium. Like other noble gases, neon is colorless and odorless. It glows reddish-orange in a vacuum discharge tube. It has over 40 times the refrigerating capacity (per unit volume) of liquid helium and three times that of liquid hydrogen. [3]

  9. Xenon - Wikipedia

    en.wikipedia.org/wiki/Xenon

    Xenon and the other noble gases were for a long time considered to be completely chemically inert and not able to form compounds. However, while teaching at the University of British Columbia , Neil Bartlett discovered that the gas platinum hexafluoride (PtF 6 ) was a powerful oxidizing agent that could oxidize oxygen gas (O 2 ) to form ...