How many of the following molecules-SF₂,SF₄,SF₆,SiO₂-are polar? A)0 B)1 C)2 D)3 E)4

Question

Quizplus · Accepted Answer

A molecule is considered polar if it has a net dipole moment due to the unequal sharing of electrons between atoms. In these molecules, the central atoms (S or Si) have four surrounding atoms and no lone pairs of electrons. According to the VSEPR theory, the molecules with a tetrahedral geometry are nonpolar if all four surrounding atoms are the same. However, if two surrounding atoms are different, the molecule is polar. In SF₂ and SF₆, there are two fluoride atoms (F) and two bromine atoms (Br) surrounding the central sulfur atom, making the molecule polar. In SF₄ and SiO₂, all four surrounding atoms are the same, so the molecule is nonpolar.

How Many of the Following Molecules-SF2,SF4,SF6,SiO2-Are Polar

How Many of the Following Molecules-SF₂,SF₄,SF₆,SiO₂-Are Polar