10/26/14

Unit 3 Test on Tuesday!

• Electron Configuration
• Electron Diagrams (arrows)
• Valence Electrons
• Ionic Bonding and Naming
• Metal + Non metal
• Find the charge on atoms
• Cross over method
• Roman Numerals
• Polyatomic ions
• Covalent Bonding and Naming
• Non metal + Non metal
• Prefixes
• Draw molecules (model lab)

Practice Questions:

1. Covalent bonding, for example in water, results in                                   .

2. The roman numeral in Copper(II) Chloride represents what?

3. What is the charge on the halogens?

Answers:  

1. a molecule

2. the charge on the metal Copper

3. -1

More practice: 

Element	e- configuration	Valence Electrons	Charge
Li

Electron Diagram for Sulfur: