alkali metal

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alkali metal

n.
Any of a group of soft, white, low-density, low-melting, highly reactive metallic elements, including lithium, sodium, potassium, rubidium, cesium, and francium.

alkali metal

n
(Elements & Compounds) any of the monovalent metals lithium, sodium, potassium, rubidium, caesium, and francium, belonging to group 1A of the periodic table. They are all very reactive and electropositive

al′kali met`al


n.
any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis.
[1880–85]

alkali metal

Any of a group of soft metals that form alkali solutions when they combine with water. They include lithium, sodium, potassium, rubidium, cesium, and francium. Except for cesium, which has a gold sheen, alkali metals are white. The alkali metals have one electron in their outer shell, and therefore react easily with other elements and are found in nature only in compounds. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.alkali metal - any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium)alkali metal - any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium); "the hydroxides of the alkali metals are strongly alkaline"
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
Translations
alkalický kov
alkalimetalli
References in periodicals archive ?
For those planets, it is suggested that things like clouds and alkali metals are the reason for the absorption of light, but those don't work for WASP-12b because it is so incredibly hot," explains Bell.
Inorganic Specialties includes the Evans City, Pennsylvania, USA, production site and the Specialty Alcoholates, Boranes and Alkali Metals product lines which are produced at the site.
When Smartex which was launched at Wetex 15 in Dubai, is able to smartly extract families of ions in line with Mendeleev classification columns, such as Alkali metals (cations+) or Alkaline earth metals (cations++), Selectex takes the technology one step further, said the company in a statement.
The alkali metals found in such coals are known to vaporize and form low melting temperature compounds that condense onto cooler surfaces.
The alkalis and low coordination acenes salts a-M@n-acenes (M = Li, Na and K) salts (n = 1, 2 and 3) were designed to investigate the effect of the increasing atomic number of alkali metals and the number n of conjugated benzenoid rings on the nonlinear optical responses.
Among the topics are alkali metals, the boron group--group 13, the carbon group, transition metals and d-block metal chemistry, radioactive compounds and their clinical application, and chelation therapy.
With snapshots from a high-speed camera, chemists can finally explain why sodium and other alkali metals blow up in water.
For synthesis of polycarbynes, studies on Wurtz coupling of sp3 coordinated bromoform initiated with alkali metals have been published, but these reactions are extremely exothermic and potentially violent.
Possible health risksHeavy and alkali metals released from the melange zone are the major cause of health risk for local population in the study area.
Poly Shield's desalination bio-scrubber is a patent-pending (in US and Europe), cost-effective technology designed to remove alkali metals from fuel in an effort to protect gas turbines from high temperature corrosion.
The reaction of the molecule with a number of alkali metals caused it to fluoresce.