Word: illinium
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Dates: during 1930-1939
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...elements on earth, no more, no less, chemists had isolated 83. Last discovery of a tangible element, which could be handled and weighed, occurred in 1926 when Professor B. Smith Hopkins of the University of Illinois found Element No. 61 among some rare earths and named it illinium (TIME, March 22, 1926). After illinium, which existed in too small quantities to be, put to commercial use, only No. 85 which must resemble iodine and No. 87 which must resemble cesium remained vacant in Mendeleyeff's Periodic Table...
...Them" referred particularly to Professor Jacob Papish of Cornell, who last autumn recognized eka-cesium with the x-ray spectrograph. With an x-ray spectrograph Professor B. Smith Hopkins of the University of Illinois discovered the third last unknown element, No. 61, of the Periodic Table, which he named illinium (TIME, March...
...More important than his own work in the chemistry of coal, is the part Professor Parr played in encouraging the sort of research which ultimately led Professor B. Smith Hopkins to discover Element No. 61. This, the only element so far revealed by a U. S. chemist, was named Illinium...
...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 (1926) for Illinois. Hence, for eka-cesium, alabamium is appropriate for the state in which the discoverers work...