Scelta multipla
Which of the following best describes the molecular polarity of SO2Cl2 (thionyl chloride)?
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13. Liquids, Solids & Intermolecular Forces
Molecular Polarity
Scelta multipla
Which phrase best describes a polar molecule in terms of its molecular polarity and distribution of charge?
A
The molecule has a symmetrical shape and an even distribution of charge.
B
The molecule has an uneven distribution of charge, resulting in a dipole moment.
C
The molecule contains only nonpolar covalent bonds and no dipole moment.
D
The molecule has no regions of partial positive or partial negative charge.
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Understand that molecular polarity depends on both the polarity of individual bonds and the overall shape of the molecule.
Recall that a polar molecule has an uneven distribution of electron density, which creates regions of partial positive and partial negative charge.
Recognize that this uneven charge distribution leads to a dipole moment, a vector quantity representing the separation of charges.
Note that symmetrical molecules with evenly distributed charge typically have no net dipole moment and are nonpolar.
Conclude that the best description of a polar molecule is one that has an uneven distribution of charge, resulting in a dipole moment.
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