CH 301 Study Guide - Midterm Guide: Valence Bond Theory, Polar 3, Molecular Geometry
Document Summary
The higher the e. n, the higher the attraction. Electronegativity increases from bottom to top and left to right. Electrons reside closer to the element with the higher electronegativity. Note: how to compare polarity of covalent bonds: take difference in electronegativity, whichever has higher electronegativity, is more polar, if e. n is greater than 1. 5, then bond is ionic. Molecules with large dipole moment = polar. Molecules with low dipole moment = nonpolar. Quantity that describes two opposite charges separated by a distance. Note: factors in determining if a molecule has a dipole moment. Equation for dipole moment: must be polar covalent, shape shouldn"t allow dipoles to cancel. See bottom for help on drawing the molecule (lewis dot, electronic/molecular. Vsepr (valence shell electron pair repulsion theory)- electrons will exist as far away as possible from each other- dictated angles and shape (electronic geometry) High electron density- most likely place to find e-
