CHE 201 MOLECULAR GEOMETRY: LEWIS STRUCTURES, VSEPR THEORY AND VALENCE BOND THEORY SEQ CHAPTER \h \r 1LABORATORY REPORT: MOLECULAR GEOMETRY - LEWIS STRUCTURES & VSEPR THEORY PROCEDURE: Look to the...

Please complete this Lab Report and write it neatly because I will use the answers to redo the lab in my own handwriting.




CHE 201 MOLECULAR GEOMETRY: LEWIS STRUCTURES, VSEPR THEORY AND VALENCE BOND THEORY SEQ CHAPTER \h \r 1LABORATORY REPORT: MOLECULAR GEOMETRY - LEWIS STRUCTURES & VSEPR THEORY PROCEDURE: Look to the example of ammonia (NH3) as a guide. On the following pages, for each molecular formula: 1. Calculate the number of valence electrons to be included in the structure; 2. Draw the correct Lewis dot structure; 3. Indicate the number of electronic regions around the central atom; 4. What is the electronic geometry around central atom; 5. How many lone pairs of electrons (nonbonding pairs) are around central atom; 6. What is the molecular geometry around central atom; 7. IDEAL existing bond angles around central atom (Note: Do not report anything other than 90°, 109.5°, 120° and/or 180° and do not report bond angles that do not exist in the structure drawn); and 8. The overall polarity within the molecule (polar or nonpolar). You may need to assign formal charges to determine the correct arrangement of the electrons. The octet rule must apply for C, N, O and F. Molecules marked with an asterisk (*) do not obey the octet rule. Molecular Formula 1. # Valence Electrons 2. Lewis Structure 3. Number of Electron Regions 4. Electronic Geometry 5. Number of Lone Pairs 6. Molecular Geometry 7. IDEAL Existing Bond Angles 8. Overall Polarity NH3 5+3(1)= 8e- .. H — N — H | H 4 tetrahedral 1 trigonal pyramidal 109.5̊ Polar SBr2 _______ CHCl3 _______ AsO43- (violates octet rule) _______ HCN _______ *KrS2 (violates octet rule) _______ CH2O (C is the central) _______ CSO (C is the central) _______ *KrCl2 (violates octet rule) _______ *ICl4+ (violates octet rule) _______ *SBr4 (violates octet rule) _______ *XeCl6 (violates octet rule) _______ SO2 (violates octet rule) _______ *KrI4 (violates octet rule) _______ *SeCl5+ (violates octet rule) _______