Biochemistry 2280A Study Guide - Midterm Guide: Covalent Bond, Vsepr Theory, Euclidean Vector
13 Mar 2018
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Chapter 1 - covalent bonding and shapes of molecules. Electron shells are divided into subshells labelled s, p, d, f which all contain orbitals each with two electrons. Each shell contains 2n^2 electrons, n being the shell number. Any second period element or above can"t overfill its octet. 2nd shell = 2s, 3 2ps = 8 e"s. 3rd shell = 3s, 3 3ps, 5 3ds = 18 e"s. Electronegativity increases from left to right and bottom to top. The charge on an atom in a molecule. Fc = (# ve"s in neutral form) - (#bonds + lone e"s) The theory that electrons will configure in such a way that they are furthest from each other. Typically, four regions of electron density = 109. 5. Note: a molecule is nonpolar if. : it has all nonpolar bonds, its polar bonds vector sum to 0.
