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HeH: excimer compound.

Chemistry textbooks used to say that the noble gases are called noble because they do not form compounds. Their nobility has been compromised for decades--under admittedly unusual conditions, they do compound. In the Nov. 11, PHYSICAL REVIEW LETTERS, Thomas Moller, Michael Beland and Georg Zimmerer of the University of Hamburg in West Germany report evidence for the formation of the simplest possible noble-gas compound, helium hydride. It forms when a mixture of helium and hydrogen is energetically excited by ultraviolet radiation from a synchrotron. Noble-gas compounds are interesting to theoretical chemists for the information they give about compound formation, and to technologists for possible use in lasers.
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Title Annotation:helium hydride
Publication:Science News
Date:Nov 30, 1985
Words:107
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