1. Do Now Which compound is ionic?
HCl
CaCl2
SO2
N2O
In which compound have electrons been transferred to the oxygen atom?
CO2
NO2
N2O
Na2O

2. Ionic Bonding Williamsburg High School for Architecture and Design
Mr. Quinn and Ms. Tom
11/13/13

3. Aim
What happens if an atom steals or loses electrons from two ions?

4. From Yesterday… Losing an electron grants a +1 charge
Gaining an electron grants a -1 charge

5. New Skill: Writing Ionic Formulae

6. Lewis Structures III: The Return II

7. A&D vs. Regents, Round 1 more protons fewer protons more electrons
Compared to a calcium atom, the calcium ion Ca2+ has
more protons
fewer protons
more electrons
fewer electrons

8. A&D vs. Regents, Round 2
What is the correct Lewis electron-dot structure for the compound magnesium fluoride?

9. A&D vs. Regents, Round 3
Element X reacts with chlorine to form an ionic compound that has the formula XCl2. To which group on the Periodic Table could element X belong?
Group 1
Group 2
Group 13
Group 15

10. A&D vs. Regents, Round 4
What is the correct Lewis electron-dot structure for the compound potassium oxide?