question_answer

Which has the maximum dipole moment?

A)  

B)  

C)  

D)  

Correct Answer: A

Solution :

 The dipole moment of a molecule increases on increasing the eleetronegativity difference between two atoms. In formaldehyde the eleetronegativity difference between O and H is more hence, dipole moment of formaldehyde is maximum from the given compounds due to increase difference of charge.