Word: alkalis
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Dates: during 1930-1939
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Mathieson Alkali...
...cesium in certain salts they had reduced from lepidolite, a form of mica, and pollucite, a mineral consisting chiefly of cesium, aluminum and silicon. When they break down their salts they will get a soft silvery-white metal which will look and react much as do the alkali metals lithium, sodium, potassium, rubidium and cesium. When eka-cesium is isolated, then Messrs. Allison & Murphy will have the pleasant problem of naming it. The recent tendency for such names has been after places-hafnium (1922) for Hafnia (Copenhagen), masurium (1924) for the Masurian Lakes, rhenium (1924) for the Rhine, illinium...