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|Section2= |Section3= |Section4= }} Hydrogen deuteride is a diatomic molecule substance or compound of the two isotopes of hydrogen: the majority isotope 1H protium and 2H deuterium. Its proper molecular formula is H2H but for simplification it is usually written as HD. == Natural abundance == Hydrogen deuteride is a minor component of naturally occurring molecular hydrogen. In particular, hydrogen deuteride is one of the minor but noticeable components of the atmospheres of all the giant planets, with abundances from about 30 ppm to about 200 ppm. HD has also been found in supernova remnants, and other sources. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「hydrogen deuteride」の詳細全文を読む スポンサード リンク
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