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alkaline earth metal |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.04 sec. |
alkaline earth metalAny of the six chemical elements in the second leftmost group of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium). Their name harks back to medieval alchemy. Their atoms have two electrons in the outermost shell, so they react readily, form numerous compounds, and are never found free in nature. |
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| Pennsylvania is planning to
construct 10 bridges along Interstate 99 using concrete mixtures
containing industrial byproducts such as fly ash, silica fume, ground
granulated blast furnace slag and an alkaline earth mineral admixture. The mystery element is an alkaline earth metal, or one of a group
of elements that is highly reactive in nature. This may reflect the concentration
of alkaline earth metals (Ca, Sr) in soil and groundwater as is typical
in dry climates. |
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