CHEM 101 Lecture Notes - Lecture 3: Lone Pair, Hydrogen Bond, Electronegativity
Document Summary
Atoms that have gained or lost electrons. Therefor, we only talk about the empirical formula of an ionic compound, not the molecular formula. Ions are ions in the ionic compound, so they are attracted to each other by coulomb"s law. Atoms want to have a full valence shell of 8 electrons. Number of valence electrons most likely ion charge. Elements shair 1, 2, or 3 pairs of electrons. All elements except h and he must have a total of 8 electrons. Electrons spend more time around o then h. 2(partial negative charge) on o, 1(partial positive charge) on each h. Attractions between hydrogen and other atoms based on partial charges. Allows water molecules to attract one another. Each water has 4 water molecules attracted to it. H of a water molecule attracted to each lone pair on o. Lone pairs on o attracted to each h. All hydrocarbon except for an oh group on the end.
