it is ,charge * distance= p [ dipole moment is denoted by 'p ' ]
when there are two unlike charges , let q1 and -q2 , placed at some distance 'd ' [distance between dipole is very small]
the system is dipole.
p = q * d [ here we take 'q ' as magnitude ]
SI unit =Cm
from question ,CH2CI2 has more dipole moment.