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CH 301 Quiz #2 Notes.docx

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Department
Chemistry
Course
CH 301
Professor
Dave A.Laude
Semester
Fall

Description
Question Types Notes for Quiz #2 (CHEM) (Lecture 10-12) 1. Identifying ionic and covalent bond in polar and non-polar molecules. ∑∆EN = 0 non-polar molecule [symmetrical] Ex: C-----C ∑∆EN ≠ 0 polar molecule [non-symmetrical] Ex: C-----O ∆EN < 1.5 covalent bond Ex: C-----O ∆EN > 1.5 ionic bond Ex: Na-----Cl 2. VSEPR: Assigning bond angle to a Lewis structure [see next page] 3. VSEPR: Assigning hybridization to a Lewis structure [see next page] 4. VSEPR: Assigning electronic geometry to a Lewis structure [see next page] Electronic geometry – the shapes of the electron rich regions  Erase the atoms and just look at the electron pairs and the five possible answers 5. VSEPR: Assigning molecular geometry to a Lewis structure [see next page] Molecular geometry – 13 possible shapes of the atoms in the molecule and ignores the electrons  Erase the electrons and just look at the shape the atoms take on  Ex: what is the shape of 2 O? angular 6. VSEPR: Assigning polarity to a Lewis structure 7. VSEPR: Assigning polarity to a Lewis structure 8. VB: Assigning sigma and pi bonds to a Lewis structure 9. VB: Explaining the origin of hybrid orbits
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