Question

Determine whether each molecule is polar or nonpolar:

Answer 1

Silicon tetrachloride is non-polar because the four chemical bonds between silicon and chlorine are equally distributed.

CF2Cl2 is polar due to difference in electronegativity of F & Cl

SeF6 is not polar. Although the Se-F bond is polar, the SeF6 molecule has an octahedral coordination symmetry, and the net dipole moment due to the six polarSe-F bonds is zero.

IF5 is polar The electronegativity of F is more than that of I so there are dipole moments on each of these bonds. There is one side of this molecule that has a lone pair of electrons. This lone pair pushes the bonds farther away