IITians at your home
ISO 9001:2008 Certified
Contact our Toll Free Nos
  • India Toll Free : 1-800-3070-0017
  • Bahrain (National) : 973-16198627
  • Indonesia Toll Free : 1-803-015-204-5864
  • Singapore (National) : 65-31586005
  • USA/Canada Toll Free : 1-888-442-3128
  • Others : +91-9899713975
India's No. 1 Online Academy
Dipole Moments of Molecules

In Section 1.3, we saw that for molecules with one covalent bond, the dipole moment of the bond is identical to the dipole moment of the molecule. For molecules that have more than one covalent bond, the geometry of the molecule must be taken into account because both the magnitude and the direction of the individual bond dipole moments (the vector sum) determine the overall dipole moment of the molecule. Symmetrical molecules, therefore, have no dipole moment. For example, let’s look at the dipole moment of carbon dioxide (CO2 ). Because the carbon atom is bonded to two atoms, it uses sp orbitals to form the C−O σ bonds. The remaining two p orbitals on carbon form the two C−O π bonds. The individual carbon–oxygen bond dipole moments cancel each other—because sp orbitals form a bond angle of 180°—giving carbon dioxide a dipole moment of zero D. Another symmetrical molecule is carbon tetrachloride (CCl4). The four atoms bonded to the sp3 hybridized carbon atom are identical and project symmetrically out from the carbon atom. Thus, as with CO2 , the symmetry of the molecule causes the bond dipole moments to cancel. Methane also has no dipole moment.

Dipole Moments of Molecules
Dipole Moments of chloromethane
Dipole Moments of chloromethane,water and ammonia
Problem: Dipole Moments
Do you like this Topic?
Share it on
  • Online Classroom Program

    • IITians @ Your Home, Attend Classes directly from Home
    • Two way interaction between Teacher and Students
    • Zero Travel Time or Cost involved, No Hidden Charges
    • Small Batch Sizes, Maximum of 8-10 Students
    • Golden Opportunity to be trained by IITians and NITians
    • All you need is a Computer / Laptop & Internet Connection
    Try Free Demo Class IIT JEE Online Classes
  • 1 on 1 Online Class

    • IITians @ your Home for 1 on 1 Class
    • Two way Communication between Teacher and Student
    • Special Doubt Removal & Problem solving Sessions
    • Customize the Course as per your desire - Duration, Timing, Faculty etc
    • All faculties are IITians and NITians
    • All you need is a Computer / Laptop & Internet Connection
    Try Free Demo Class IIT JEE 1 on 1 Online Classes
  • Correspondence Course Details

    • 600 Hours of Recorded Lectures by IITians and NITians
    • Best Study Material comprising all Concepts and Tricks
    • 10000+ Solved Question Bank + 250 Hours of Video Solutions
    • Complete NCERT solutions + 150 Hours of NCERT Video Solutions
    • Last 30 years JEE chapterwise video solutions
    • 100% Original Material prepared by JEE Experts
    Register for Free Now IIT JEE Correspondence Courses
  • AITS for JEE Main and JEE Advanced

    Register for Free Now JEE Test Series

Welcome to Kshitij Education India

Our Guarantee:

We're so sure you'll have the time of your life with us, we back our courses with a 100% Satisfaction Guarantee.

If for any reason you aren't 100% satisfied with your classes in first 7 days, just let us know and we'll refund your fees. No questions asked.

And based on your feedback, we will take the necessary steps to ensure we never repeat any mistakes as such.

Live Chat