凡有氢键的物质其溶、沸点一定比同类物质的溶、沸点高。
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Molecules that contain a polar bond are not necessarily polar compounds.
A. 对
B. 错
According to molecular-orbital theory, Ne2+ is expected to exit.
A. 对
B. 错
Ethanol C2H5OH and methyl ether CH3OCH3 has a same boiling point because they have a same molar mass. ____.
A. 对
B. 错
一维晶格的近自由电子近似,电子波函数形式是形式。展开成求和形式时,第一部分为,第二部分为电子在行进过程中。