: any of the monovalent mostly basic metals of group I of the periodic table comprising lithium, sodium, potassium, rubidium, cesium, and francium — see Periodic Table
Examples of alkali metal in a Sentence
Recent Examples on the WebIn the paper, scientists characterize the meteorites’ material phases as alloys of lead, tin and indium, which is the softest non-alkali metal.
Fox News, 24 Mar. 2020 The first group, known as the alkali metals, has just one such electron, easy to lose when reacting with an element that has more electrons, such as one from the 17th group, the halogens.
Bill Andrews, Discover Magazine, 26 June 2019 The brine water that has been accumulating for millennia under the Atacama is lithium-rich, and companies pump it out and send the brine to evaporation ponds where heat extracts the water and leaves the reactive alkali metal behind.
Megan Geuss, Ars Technica, 21 Oct. 2018 The calibration is done with the alkali metal cesium.
Jay Bennett, Popular Mechanics, 24 Mar. 2017
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