题目内容

分子的极性不仅与分子中的键极性有关,还和分子的构型有关。

A. 对
B. 错

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凡有氢键的物质其溶、沸点一定比同类物质的溶、沸点高。

A. 对
B. 错

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