Understanding molecular polarity can be challenging when studying chemical bonding and molecular geometry. SF4 (sulfur tetrafluoride) is an interesting molecule because its shape and bond arrangement determine whether it is polar or nonpolar. SF4 has a seesaw molecular geometry due to the presence of one lone pair on the central sulfur atom. Although the S–F bonds are polar because fluorine is more electronegative than sulfur, their dipoles do not completely cancel because of the asymmetric molecular shape. Therefore, SF4 is considered a polar molecule .
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发表于 2026-9-18 14:38:59