Final answer:
option 2,TeBr2 is polar because of its bent and asymmetrical shape, which means the polar bonds do not cancel out. XeBr2 is likely nonpolar if it has a linear and symmetrical geometry, allowing the polarities to cancel each other out.
Step-by-step explanation:
To answer which of the molecules TeBr2 and XeBr2 are polar or nonpolar, we must consider the molecule's shape and the electronegativity of the atoms involved. For a molecule to be polar, it must have polar bonds and an asymmetric geometry, which would result in a net dipole moment. Considering that TeBr2 is polar due to a bent shape resulting from the presence of lone pairs on the tellurium, this makes the molecule asymmetrical. However, XeBr2 is expected to be nonpolar if it has a linear shape with bromine atoms on opposite sides of the xenon, which will result in the polarities canceling each other out.
Thus, the correct statement about the molecules TeBr2 and XeBr2 is that TeBr2 is polar and XeBr2 is nonpolar. This is because TeBr2 has an asymmetrical shape with a bent molecular geometry, which does not allow the polar bonds to cancel out. On the other hand, XeBr2, with a linear molecular geometry, is symmetrical, and thus, the polarities of the bonds cancel out, making the molecule nonpolar.