Which of the following has a non zero dipole moment ?

The formal charge is the difference between the number of valence electrons in an isolated (i.e. free) atoms and the number of electrons assigned to that atom in a Lewis structure. For a molecule the net dipole moment is the vector addition of bond moment adn lone pair moment. Which of the following has non zero dipole moment and non-planar ?

Which of the following has non zeor dipole moment ?

Which of the following has almost zero dipole moment?

Whch of the following has/have non-zero dipole moment?

Which of the following pairs has zero dipole moment ?

Which of the following is having zero dipole moment ?

Which of the following is having zero dipole moment ?

Which of the following has zero dipole moment value ?

Which one of the following has zero dipole moment?