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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison.

  3. Helium - Wikipedia

    en.wikipedia.org/wiki/Helium

    According to helium conservationists like Nobel laureate physicist Robert Coleman Richardson, writing in 2010, the free market price of helium has contributed to "wasteful" usage (e.g. for helium balloons). Prices in the 2000s had been lowered by the decision of the U.S. Congress to sell off the country's large helium stockpile by 2015. [23]

  4. Hardnesses of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Hardnesses_of_the_elements...

    Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide. This article needs additional ...

  5. Critical points of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Critical_points_of_the...

    David R. Lide (ed), CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida, 2003; Section 6, Fluid Properties; Critical Constants. Also agrees with Celsius values from Section 4: Properties of the Elements and Inorganic Compounds, Melting, Boiling, Triple, and Critical Point Temperatures of the Elements

  6. Helium supplies at risk from plunging oil prices – which is ...

    www.aol.com/news/helium-supplies-risk-plunging...

    Helium plays an important role in breathing devices and it mostly comes as a by-product of petroleum production. Helium supplies at risk from plunging oil prices – which is bad news for our ...

  7. Periodic table - Wikipedia

    en.wikipedia.org/wiki/Periodic_table

    Hydrogen is the element with atomic number 1; helium, atomic number 2; lithium, atomic number 3; and so on. Each of these names can be further abbreviated by a one- or two-letter chemical symbol; those for hydrogen, helium, and lithium are respectively H, He, and Li. [6] Neutrons do not affect the atom's chemical identity, but do affect its weight.

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  9. Template:List of oxidation states of the elements - Wikipedia

    en.wikipedia.org/wiki/Template:List_of_oxidation...

    Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... helium: He 0 18 0 [1] 3 lithium: Li −1 +1: 1 [2] 4