🤓 Based on our data, we think this question is relevant for Professor Yang's class at FSU.
For a molecule to have a dipole moment, the individual dipole moments of its bonds must not cancel out.
(a) SF4 : The Lewis structure for SF4 is:
Sulfur (2.58) is less electronegative than fluorine (3.98), which means the S–F bond has a dipole moment. Since the central atom S also has a lone pair, there's also a dipole arrow pointing away from it. The dipole arrows in SF4 would look like this:
Identify the molecules with a dipole moment:
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