Chapter 4: Polar Molecules

Molecular polarity depends on

1. Shape of the molecule 2. Presence of polar covalent bonds or lone pairs Ex: H₂O - electrons are displaced AWAY from the less electronegative atom (H) and TOWARD the more electronegative atom (O) - Net polarity points between the two O-H bonds

Molecular polarity is determined by finding the _________________

Sum of all individual bond polarities and lone pair contributions in the molecule

True or false: entire molecules can be polar

True - Occurs when electrons are atteacted more strongly to one part of the molecule than to the other - Represented by an arrow pointing in the direction in which electrons are displaced (more negative side)