CHM 113 Lecture Notes - Ionic Bonding, Ionic Compound, Nonmetal
Document Summary
Electron affinity (ea): ease that an atom can pick up an electron: increase from left to right. Ionization energy (ie): energy required to remove an electron: increases left to right and bottom to top. Electronegativity (en): ability of an atom in a molecule to attract electrons to itself: trends: Increases from left to right and bottom to top: when two atoms bond in a compound, en allows us to determine relative electron density. H & li are more electropositive ( +) H-f and li-f have dipole moments due to a difference in en between atoms. We show this with vectors pointing to the negative side. Lif, kcl, mgo: ionic bond: occurs between two atom with a large difference in en (metal and nonmetal, one atom donates a ve and another accepts it. Na donates its single ve to cl. Attractive force: force - q1-q2/d2.
