Which molecule below is polar O CF4 O SiH4 O CH2CI2 O CO2 So

Which molecule below is polar? O CF4 O SiH4 O CH2CI2 O CO2

Solution

CF4 , SiH4 and CO2 are all symmetric molecules

so

they are non polar

now

CH2Cl2 is also symmetric but

the polarities of the bonds , C-Cl and C-H are different

so they do not cancel each other , resulting in a polarity

so

the answer is CH2Cl2