Chemistry Honors – Class 43

Dates

• Period B: Thursday, April 16th
• Periods D, G: Friday, April 17th

Lewis Dot Structures – Activity

• Complete on paper
• One formula per side of sheet of paper
• name compound
• determine total valence electrons
• draw Lewis structure
• formal charge for each atom
• bond polarity (of each bond – use arrows)
• identify lone, total pairs around central atom

Compounds

• SiCl₄
• NCl₃
• OF₂
• RnF₂
• BrF₃
• SF₄
• SbCl₅
• XeF₄
• IF₅
• SF₆
• H₂CO
• HCN
• ClO₃^-1
• CO₃^-2
• NH₄⁺¹

Things to Consider

• Octet Rule (CNOF only)
• H, F bond only once
• central atom probably closest to carbon
• does formal charge match what you expect?
• is there resonance? how do I show this?