alkali metal

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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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)
Farlex Partner Medical Dictionary © Farlex 2012

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) .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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) .
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Radke, "Effect of organic and alkali metal cations on the distribution ofsilicate anions in aqueous solutions," Journal of Physical Chemistry, vol.
However, after passing their flat interface regime, the gradients of the maximum elevation for all molten alkali metal salts start to decrease and then approach their asymptotic value of 0.25.
Its current density is several times higher for all alkali metal ions and it decreases in the raw [Cs.sup.+], [K.sup.+], [Na.sup.+], [Rb.sup.+], and [Li.sup.+].
A known volume of alkali metal bromide solutions were introduced in to the viscometer by placing it in the thermostatic water bath having a constant circulation of water.
Alkali metal and alkaline earth metal which are supported on [gamma]-[Al.sub.2][O.sub.3] can modulate the distribution of the amount of alkali and base intensity.
found that composites of organic polymers and metal compounds can be produced easily from a quick one-step reaction under ordinary temperature and pressure conditions by stirring an organic solution of halide dicarboxylates, dichloroformate, or phosgene compounds with a basic aqueous solution of a metal oxide, a metal hydroxide, and a metal carbonate of an alkali metal and a transition metal with a diamine.
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 40.0-4533.0 pK 0.685-6.703 K 77.0-705.0 pCa 11.034-79.614 Ca 548.0-5651.67 pLi 0.097-0.373 Li 1.74-7.0 pMg 11.744-71.265 Mg 230.26-5653.95 rNa 0.01-2.271 Na/K 0.093-58.87 rK 0.007-0.072 Mg/Ca 0.089-1.681 rCa 0.124-3.905 SAR 0.021-4.707 rLi 0.001-0.004 pNa 0.954-69.431 rMg 0.133-2.48
Numerous computational studies [22-43] have been carried out to study the structure and energetics of interactions between alkali metal cations and different Lewis bases.
The intumescent material comprises filler material, binder material and a hydrated alkali metal silicate intumescent component.
The percentages of leached alkali metal (Alk %) with respect to total alkali metal in the original sample, [w.sub.s] (mg.[g.sup.-1]), can be calculated from the formula
According to the companies, SiGNa's patent-pending alkali metal reagents allow scientists and researchers to "dramatically" improve efficiencies and results, "bypassing traditional dangerous steps in alkali metal reduction processes."
Proceeding from that, alkali metal compounds can be divided into the following three groups: [p.sub.s.1]--easily water-soluble, [p.sub.s.h]--heavily watersoluble and ps.n--water insoluble compounds.