Word: halogen
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Dates: during 1930-1939
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...explain how the elements hold together in chemical combinations. By mathematics he has shown how to make light hydrogen atoms spin clockwise or counterclockwise at will, how to introduce bromine into organic compounds most easily. By mathematics he has proved that pure fluorine is the least active of the halogen group of elements (fluorine, chlorine, bromine, iodine), a fact which controverts accepted chemistry...
...very similar forms or isotopes. No. 87 belongs to the base-forming family of elements which include lithium, sodium, potassium, rubidium, cesium. Professor Allison, 50, asked scientists to call the element virginium. after the State of his birth. He asked them to call Element No. 85 ?a halogen with fluorine, chlorine, bromine, and iodine?alabamine, after the State whose Polytechnic Institute at Auburn he has headed for ten years. As scientific tender for this request, he last week reported that he had concentrated the relatively vast amount of 1/400,000th of a gram of alabamine in combination with lithium...
...method was to take materials which he reasoned might contain eka-iodine. Since eka-iodine would be a halide like fluorine, chlorine, bromine and iodine, only heavier, he used seawater, fluorite and other halogen compounds. He burned each of them and sent their complex light through a polariscope and then through a magnetic field. A magnet twists polarized light to a calculable extent. The fineness of this magneto-optic rotation is such that it can detect one part of a substance in 100 billion parts. The greatest amount of eka-iodine Dr. Allison could find in any of his substances...
...iodine, the other element yet to be isolated, belongs to the halogen group- with fluorine, chlorine, bromine and iodine...