CEM 141 Lecture Notes - Lecture 31: Effective Nuclear Charge, Intermolecular Force, Polar 3
Document Summary
Ability of an element to attract electrons to itself in a bond. Across a row trend is same as effective nuclear charge (except noble gases). You do need to be able to predict which atom is most electronegative in any particular bond. When two atoms of different electronegativities bond, the electrons are not shared equally. Because in this case the molecule only has one bond, the molecule also has a dipole. The molecule is polar: h cl is polar, h o is polar, c c is not polar, h c is a little bit polar but not enough to bother with. In order to find out if a bond is polarmolecular shape is important. 5. add up the bond polarities (take into account the direction they are vector quantities). Polar (3 bonds are non-polar, and only 1 bond is polar) Out of he, ne, ar, kr, and xe, xenon has the highest boiling point.
