alkaline earth

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alkaline earth

[¦al·kə‚līn ′ərth]
(inorganic chemistry)
An oxide of an element of group 2 in the periodic table, such as barium, calcium, and strontium. Also known as alkaline-earth oxide.
References in periodicals archive ?
ABSTRACT: The purpose of study was to assess concentration of some selected heavy metals along with selected alkali and alkaline earth metals in the sample of Jabal-al-Noor Makkah.
6 Determination of Alkali and Alkaline Earth Metals by Flame Photometer: The amount of alkali and alkaline earth metals (Li+, K+, Na+, Ca+2, Ba+2) in the sample extract was determined by Janway PFP-7 Flame Photometer [9].
It is the heaviest of the alkaline earth metals and is found in trace amounts of uranium ores.
The alkali (Na, K) and alkaline earth metals (Mg, Ca) play critical role in basic biological processes and ate required in larger quantities and therefore are suitably recognized as macronutrients.
An understanding of the soil nutrients including alkali and alkaline earth metals is important for proper management of wetland-dominated systems, as they greatly influence the productivity (Mitsch and Gosselink 2000; Bai et al.
Alkali and alkaline earth metals were estimated after element-specific extraction.
Among the alkaline earth metals, Ca showed a gradual decline from the litter layer to the bottom of the profile in all 3 years irrespective of the habitat type (Figs 2c, 3c, 4c).
This suggests, says Scerri, that helium belongs on the far left of the chart with the alkaline earth metals, which also have two electrons in their outer shells.
But he argues that placing helium with the alkaline earth metals results in a more regularly shaped structure that can take two forms.