Word: hydrogenic
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Dates: during 1930-1939
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...proton, which is 1,845 times as heavy as an electron, might make an electron its satellite. Such a simple system of one electron revolving around one proton makes up a common atom of hydrogen, simplest of the 92 elements. (Helium, next simplest, has an alpha particle for its core, two electrons for satellites. Other atoms have more protons, more electrons...
...heavy "grapefruit" isotopes, a still shorter distance. By measuring the distances between them on the plate Dr. Bainbridge could calculate the relative weights of Ne20, Ne21, and Ne22. He thinks he can do the same for many another isotope of many another element, including the isotope of hydrogen, found last December (TIME, Dec. 21). By weighing the hydrogen isotope he thinks he may be able to throw some light on what happens to .0308 of hydrogen's atomic weight (1.0077) when four atoms of it combine to form one atom of helium (atomic weight: 4). It is that lost energy...
...Nucleus, The late great Dmitri Ivanovitch Mendeleeff arranged the 92 elements in a periodic table according to weight. The late Henry Gwyn-Jeffreys Moseley found that each atomic number corresponded to the number of negatively charged electrons outside the nucleus. Element No. 1, hydrogen, has one such electron; No. 2, helium, has two; lithium, No. 3, three. . . . For each negative electron the nucleus of an atom must contain a positively charged proton. And, except in hydrogen, all nuclei were found to contain more protons than were electrons around them. The additional necessary electrons were found in the nucleus. Lithium, with...
...Most elements have two or more isotopes. Tin has eleven. Several scientists have predicted that hydrogen, too, simplest of the elements, would be found to have two isotopes. Professor Harold Clayton Urey of Columbia University said last May that he was searching for a hydrogen isotope of weight two. Last week he found it. Co-discoverers were Dr George M. Murphy of Columbia and Dr. Ferdinand G. Brickwedde of the U. S. Bureau of Standards in Washington. Under low pressure Dr. Brickwedde liquefied hydrogen by reducing the temperature. Then he allowed the temperature to rise.' At 437º below zero...
Scientists Urey, Murphy and Brick-wedde hoped eventually to get H² in a pure form. Having two protons and one electron in its nucleus, it is twice as heavy as the previously known hydrogen, whose nucleus has one proton. The discoverers thought H² would be of no commercial use. It would give water different spectral color, new physical properties, but would not affect the taste. But since its nucleus is the simplest yet found consisting of more than one particle it would be a great aid in the study of nuclei, might add to data on the cosmic ray which...