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Unsolved problems in chemistry tend to be questions of the kind "Can we make ''X'' chemical compound?", "Can we analyse it?", "Can we purify it?" and are commonly solved rather quickly, but may just as well require considerable efforts to be solved. However, there are also some questions with deeper implications. This article tends to deal with the areas that are the center of new scientific research in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem. ==Physical chemistry problems== * What are the electronic structures of ''high temperature superconductors'' at various points on their phase diagrams?〔''The Future of Post-Human Chemistry: A Preface to a New Theory of Substances ...'', de Peter Baofu, page 285〕 * Can the transition temperature of ''high temperature superconductors'' be brought up to room temperature?〔 * Is ''Feynmanium'' the last chemical element that can physically exist? That is, what are the chemical consequences of having an element with an atomic number above 137, whose 1s electrons must travel faster than the speed of light?〔〔The problem may actually occur at approximately Element 173, given the finite extension of nuclear-charge distribution. See the article on Extension of the periodic table beyond the seventh period, and the article section Relativistic effects of Atomic orbital.〕 * How can electromagnetic energy (photons) be efficiently converted to chemical energy? For instance, can water be efficiently split to hydrogen and oxygen using solar energy?〔 〕 * What is the ''structure of water,'' and how do water molecules form their transient networks of hydrogen bonds with neighboring water molecules in bulk water. 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「List of unsolved problems in chemistry」の詳細全文を読む スポンサード リンク
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