2.2D Molecular Polarity

Tell me about Molecular Polarity

• not the same as bond polarity

• many molecules are non polar, but have polar bonds

• Common Exceptions:

  • N-CL have nearly identical polarities

  • C-H behave as nonpolar

What does Molecular Polarity depends on?

1. the polar bonds that it contains

2. the orientation of the polar bonds

what does a dipole moment mean?

refers to the fact that one side is negative and the other is positive

Dipole moment of a moment

• Dipole moment of a moment depends on the orientations of various bond dipoles

• Dipole moment of molecule is the vector sum of the bond

What are the differences between Polar and Non-Polar Molecules (in terms of dipoles)?

• Dipoles don’t cancel

• Asymmetrical

• Dipoles do cancel

• Symmetrical