Polar substances such as urea dissolve because their molecules form hydrogen bonds with the surrounding water molecules. 像尿素这样的极性物质溶解,是因为它们的分子与周围的水分子形成氢键。 HYDROPHOBIC MOLECULES 疏水分子 Substances that contain preponderance of nonpolar bonds are usually insoluble in water an...
H2O@C60 is a remarkable molecule that consists of a polar molecule encapsulated into a highly symmetric and nonpolar cage. For H2O@C60, the polarity is no longer associated with its external shape. The encapsulated water molecule can rotate freely around the center inside the cage. In this ...
Polar organic molecules with longer methylene chains and nonpolar molecules such as dinitrogen and methane were completely excluded. The guest-inclusion properties could be explained by the ion-dipole interaction between the host and the guest, which is proportional to the dipole moment of the guest ...
Which of these has a nonpolar covalent bond (i.e., pure covalent)? Choose one: a. Se-I b. Na-Br c. H-F d. Cl-Cl e. H-Cl How do you figure out if a bond is covalent or ionic? Indicate which of the bond(s) in the given molecul...