Test #1 Study Guide
Test #1 Study Guide Chem 101
Popular in Chemistry 101
Popular in Chemistry
This 3 page Study Guide was uploaded by Raquel Guerra-lewis on Monday September 21, 2015. The Study Guide belongs to Chem 101 at Washington State University taught by Dr. Michael Finnegan in Summer 2015. Since its upload, it has received 98 views. For similar materials see Chemistry 101 in Chemistry at Washington State University.
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Date Created: 09/21/15
Chemistry 101 9 14 159 19 15 NOTES EXAM Thursday September 24th 600 pm Ch 1116 24 quiz 13 HW set 14 lab WS 2 experiment 5 Turn in experiment 5 lab write up at exam if you have an evening lab that takes place during the exam There will be a review session held on Tuesday 79 pm Fulmer Hall 226 the regular classroom VLab Resonance structures structures w the same sequence of atoms but different bonding patterns if resonance exists you need to draw all the possible structures that obey the octet rule C N O and F all need 8 electrons when bonding molecules obey octet rule VESPR theory groups of valence electrons around an atom will tend to stay as far apart from each other as possible Geometry electron geometry is the arrangement of electron groups around the central atom Shape molecular shape is the arrangement of atoms or bonds around the central atom Molecules and polyatomic ions can be classified as AXE type This is basically another method to count electrons it s used when you re applying the VESPR theory AXnEm N the of bonding groups around the central atom M the of lone pairs on the central atom 0 You will always start every formula with AX then write what quotnquot is followed by an quotEquot and whatever quotmquot is o The only things that change in every AXnEm formula are the quotnquot and the quotmquot Here is a chart that can help you get more familiar with how the AXE type works Steric Molecular geometrymi Molecular geometrymi Molecular geometrymi No 0 lone pair 1 lone pair 2 lone pairs x n x 2 Linear cog X E iii i I k i i 3 K v xx xx Trigonal planar BCI3 Bent 802 I I Bent H20 Tetrahedral CH4 Trigonal pyramidal N H3 httpsenwikipediaorgwikiVSEPR theory VocabZnotes Polar Molecule a molecule that has a positive and negative end possess polar bonds symmetric about the central atom In symmetric molecules the polar bonds are positioned so that the polarities oppose each other and cancel they are nonpolar even though they have polar bonds Ex C02 nonpolar N03 nonpolar CO polar SOZ polar CO4 nonpolar BF3 nonpolar Polarity basically when one side of an equation has more of an electronic pull than the other AXE Class Geometry Shape C02 AXZEO linear linear CO AX1E1 Linear Linear CO4 AX4EO tetrahedral tetrahedral N03 AX3EO trigonal planar trigonal planar SOZ AX2E1 trigonal planar bent Geometry and shape This matches the geometry with the shapes it can have Linear linear Trigonal planar bent Trigonal planar Tetrahedral bent trigonal pyramidal tetrahedral
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