DAILY QUESTION October 17, 2008 Group 1 ions have what charge? 1+ 2+

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Presentation transcript:

DAILY QUESTION October 17, 2008 Group 1 ions have what charge? 1+ 2+ 3+

Agenda 10/17/08 Daily Question Turn-in Daily Questions “Code Orange” Chapter 5 Section 3 Notes Ionic Formulas Assignments: 1. No assignment

Naming Ionic Compounds Cations (positively charged ions) Group 1 has 1 + charge Group 2 has 2 + charge Anions (negatively charged ions) Group 17 has 1 – charge Group 16 has 2 – charge Group 15 has 3 – charge

Determining charge of transition metal cations An ionic compound must have a total charge of zero.

Writing Ionic Formulas List the symbols for each ion Write the symbols for the cation first Write the chemical formula, indicating with subscripts how many of each ion are needed to make a neutral compound

Practice Writing Ionic Formulas Lithium oxide Beryllium chloride Titanium (III) nitride Li2O BeCl2 TiN