CHY 102 Lecture Notes - Lecture 9: Ionic Compound, Ionic Bonding, Lewis Acids And Bases
16 Jul 2018
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When discussing connectivity of atoms there are three types of bonds to consider: ionic: covalent: . Bonds are considered to be _______________________, that is, forces within a molecule. Later in the term we will consider ___________________________, the forces between atoms or molecules. Chemical properties and bonding are mostly determined by the number of electrons in the outermost shell of an atom (the valence electrons). Lewis devised a convenient method for representing these outer electrons in bonding - so called "lewis symbols". Let the chemical symbol stand for the nucleus and all inner electrons. Represent the outermost (valence) electrons by dots, e. g. li s c: the first period is li be b c n o f ne. Lewis diagrams are really only useful when we only have s and p electrons - and we do not distinguish between them (not much good for d electrons).
