a) melt pure solid phosphorus pentachloride b) boil pure liquid selenium tetrafl

Question

a) melt pure solid phosphorus pentachloride b) boil pure liquid selenium tetrafluoride c) boil pure liquid methanol (CH3OH) d) sublime pure solid carbon dioxide e) melt pure solid potassium metal A. a) dispersion b) dispersion c) dipole-dipole d) dispersion e) metallic bond B. a) dispersion b) dipole-dipole c) H-bond d) dispersion e) metallic bond C. a) covalent bond b) polar covalent bond c) H-bond d) polar covalent bond e) dispersion D. a) dipole-dipole b) dispersion c) H-bond d) dipole-dipole e) dispersion

Explanation / Answer

B is correct.

explanation:
a) melt pure solid phosphorus pentachloride
phosphorus pentachloride is nonpolar, thus the strongest intermolecular force is London dispersion force.

b) boil pure liquid selenium tetrafluoride

selenium tetrafluoride is polar, thus the strongest one is dipole-dipole interaction

c) boil pure liquid methanol (CH3OH)

CH3OH can form hydrogen bonds (H-O---H).

d) sublime pure solid carbon dioxide

CO2 is nonpolar, thus the dispersion force is the strongest.

e) melt pure solid potassium metal

K is metal. the intermolecular force between metal atoms is call metallic bond

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