Question

question 9 (1 point) which of the following is a polar molecule? pcl3 bcl3 co2 cf4

Explanation:

A polar molecule has a net dipole moment due to unequal sharing of electrons and an asymmetric molecular geometry. In $PCl_3$, phosphorus has a lone - pair of electrons, and its trigonal - pyramidal geometry leads to an uneven distribution of charge, making it polar. $BCl_3$ has a trigonal - planar geometry and is non - polar as the bond dipoles cancel out. $CO_2$ is linear and non - polar as the bond dipoles cancel. $CF_4$ has a tetrahedral geometry and is non - polar as the bond dipoles cancel.

Answer:

A. $PCl_3$