alkali metal

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Related to Alkali metals: Halogens

metal

 [met´'l]
any chemical element marked by luster, malleability, ductility, and conductivity of electricity and heat, and which will ionize positively in solution. adj., adj metal´lic.
alkali metal one of a group of monovalent elements including lithium, sodium, potassium, rubidium, and cesium.
metal fume fever an occupational disorder with malaria-like symptoms occurring in those engaged in welding and other metallic operations and due to the volatilized metals. It includes brassfounder's fever (brass chill, brazier's chill) and spelter's fever (zinc chill, zinc fume fever).
heavy metal one with a high specific gravity, usually defined to be above 5.0.
heavy metal poisoning poisoning with any of the heavy metals, particularly antimony, arsenic, cadmium, lead, mercury, thallium, or zinc.
noble metal a metal that is highly resistant to oxidation and corrosion.

al·ka·li met·al

an alkali of the family Li, Na, K, Rb, Cs, and Fr, all of which have highly ionized hydroxides.
Synonym(s): alkali (3)

al·ka·li met·al

(al'kă-lī met'ăl)
An alkali of the family Li, Na, K, Rb, Cs, and Fr, all of which have highly ionized hydroxides.
Synonym(s): alkali (3) .

al·ka·li met·al

(al'kă-lī met'ăl)
An alkali of the families Li, Na, K, Rb, Cs, and Fr, all of which have highly ionized hydroxides.
Synonym(s): alkali (3) .

metal

any chemical element marked by luster, malleability, ductility and conductivity of electricity and heat, and which will ionize positively in solution.

alkali metal
one of a group of monovalent elements including lithium, sodium, potassium, rubidium and cesium.
metal detector
a portable electronic device used to detect metal in the reticulum of cows. Most clinically normal cows fed on prepared rations give positive results.
metal implants
see implant.
metal retriever
a long, probang-like instrument, passed orally into the reticulum in cattle for the retrieval of metallic foreign bodies that might cause traumatic reticuloperitonitis.
References in periodicals archive ?
Concentration range for alkali metals in soils of Keoladeo National Park The range is presented excluding the concentration in the litter layers Metals and/ Range Metals and/ Range or ratios (mg/kg) or ratios (mg/kg) Na 40.
The highly reactive alkali metal combines easily with other elements to form compounds.
Encapsulating alkali metals into silica gel enables scientists who have traditionally shied away from these metals to now safely and routinely perform reductions," said Sigma-Aldrich director of business development for chemistry Chris Hewitt.
For instance, it was established that the intensity of alkali metals volatilization in the carbon monoxide environment is about fifty times higher than in the air.
According to SiGNa Chem, the company's core technology is nanoencapsulation of alkali metals into porous oxides.
It is proposed that the relative stability of these different types of complexes varies with the size of the cation, for the lighter alkali metals the [pi]-type complex being more favoured.
The new observation that sodium can melt at just above room temperature, 27[degrees]C, confirms a growing suspicion among scientists that alkali metals are more complicated than they previously thought.
The open university videos such as The Elements Organized and the more specialized Anions of the Alkali Metals show the tremendous possibilities of visual aids to chemistry teaching.
in the cells investigated, alkali metal atoms will give up an electron at the negative electrode, move through the solid electrolyte (which should have a high ion conductivity) and settles in a positive electrode, made of material whose chrystal and electronic band structure is such that it can accommodate alkali metals (insertion electrode).
This text introduces organometallic chemistry through discussions of main-group organometallics, including alkali metals, the boron and carbon groups, the nitrogen group, selenium and tellurium, and copper, silver, and gold, as well as compounds of the transition metals.
Start-up's breakthrough product harnesses power of alkali metals for generating low-cost hydrogen energy and streamlining industrial processes from pharma to ecological remediation