alkaline earth
Americannoun
noun
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Also called: alkaline earth metal, alkaline earth element. any of the divalent electropositive metals beryllium, magnesium, calcium, strontium, barium, and radium, belonging to group 2A of the periodic table
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an oxide of one of the alkaline earth metals
Etymology
Origin of alkaline earth
First recorded in 1810–20
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The only result that popped up pertained to chemistry: specifically, to the periodic table and the atomic numbers of the alkaline earth metals.
From New York Times ● May 21, 2023
In general, the alkali metals react faster and are more reactive than the corresponding alkaline earth metals in the same period.
From Textbooks ● Feb. 14, 2019
Like the alkali metals, the heavier alkaline earth metals impart color to a flame.
From Textbooks ● Feb. 14, 2019
The group 12 elements behave more like the alkaline earth metals than transition metals.
From Textbooks ● Feb. 14, 2019
From several scientific experiments which he made upon this substance, he deduced, "1st, That this concrete is not an alkaline earth, as it is not affected either by the vitriolic or vegetable acids. "
From Niagara An Aboriginal Center of Trade by Peter A.
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