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Chemistry Exam III Announcement: Important Dates and Homework Reminders

Prepare for Exam III on Dec. 5th, 7:00-8:15pm (conflict time 5:15-6:30pm). Check Lon-capa HW, due dates for Homework 6, 7, 8. Review Questions due on Dec. 4th. Electron negativity review questions and rules included.

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Chemistry Exam III Announcement: Important Dates and Homework Reminders

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  1. Announcements • Exam #3: Thursday, Dec. 5th, 7:00-8:15pm (Conflict: 5:15-6:30pm) No calculators allowed • Activity 3: Making Models of Molecules lab write-up due in Friday discussion • Lon-capa HW Remaining • Homework 6 – Type 2 due Wed, 11/20 by 7pm • Homework 7 – Type 1 due Monday, 12/2 by 7pm • Homework 8 – Type 1 due Tuesday, 12/3 by 7pm • Review Questions for Exam III due Wed, 12/4 by 10pm

  2. Electronegativity

  3. Clicker #1 Rank the following bonds from least polar to most polar: Si-Cl P-Cl Mg-Cl S-Cl A) S-Cl, P-Cl, Mg-Cl, Si-Cl B) P-Cl, S-Cl, Si-Cl, Mg-Cl C) Mg-Cl, Si-Cl, P-Cl, S-Cl D) Mg-Cl, S-Cl, P-Cl, Si-Cl E) S-Cl, P-Cl, Si-Cl, Mg-Cl

  4. Clicker #2 How many electrons would hydrogen have to share in a covalent bond in order to have a noble gas electron configuration? A) 0 B) 2 C) 3 D) 6 E) 8

  5. General Rules… • Follow the octet rule. • Follow the duet rule for hydrogen. • The total number of electrons in your Lewis structure must equal the total number of valence electrons. • The least electronegative atom is typically the central atom (except for hydrogen).

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