Ch400Ch10LN1 - Chem 400 Molecular Polarity How to Predict...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 400 Molecular Polarity How to Predict Whether a Molecule is Polar or Nonpolar • You already learned how to determine whether a BOND is polar or nonpolar using a Table of Electronegativity. • You learned to determine and draw the correct molecular geometry of a molecule. • You can put these two pieces together and determine whether the overall molecule is polar. • Although you might think that a molecule which has at least one polar bond would automatically be a polar molecule, this would be an incorrect assumption. There are lots of nonpolar molecules which contain polar bonds. However, it is true that a molecule with no polar bonds and no lone pairs must be nonpolar. • How is this possible? Because of the overall 3-D shape! If the molecule and the polar bonds are symmetrically arranged, they may cancel out. Thus, the molecule would be nonpolar with polar bonds. • Let’s take a look: • CCl 4 NH 3 PH 3 CH 3 Cl • So not only are the individual bond dipoles important, but lone pairs of electrons
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

Ch400Ch10LN1 - Chem 400 Molecular Polarity How to Predict...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online