1. Do Now:
Sodium chloride also known as table salt is an ionic compound, which is regularly consumed by many Americans. However pure sodium and pure chlorine cannot be eaten. Why is sodium chloride safe to eat but pure sodium and pure chloride is not?

2. Objective:
Be able to determine how elements will chemically react when forming an ionic compound
Ionic Compound Notes
Drawing Lewis Structures
Agenda:

3. Ionic Bonds

4. Review: Valence Electrons
Valence electrons are the electrons in the highest occupied energy level of the atom.
Valence electrons are the only electrons generally involved in bond formation.

5. Na , 11 e

6. Na + , 10e

7. Review: Electron Dot Structure or Lewis Dot Diagram
A notation showing the valence electrons surrounding the atomic symbol.

8. Elements within the same group have the same electron-dot structure.

9. Chlorine Atom  Chlorine Ion

10. Check your Neighbor
When Na, (Z= 11) loses its valence electron, what element does its configuration look like ?
Neon
Potassium
Beryllium
Sodium
C. discover the property called inertia.

11. Check your Neighbor
When Na, (Z= 11) loses its valence electron, what element does its configuration look like ?
Neon
Potassium
Beryllium
Sodium
C. discover the property called inertia.

12. A Stable Octet
When the valence energy level is full, the atom is stable, less likely to react.
Example: Noble (Inert Gases) Kr

13. Note
Atoms tend to react in a way that would lead them to have a stable octet.

14. Naming cations (+). Use the name of the metal and the word ion.
Example: Na+
Sodium ion.

15. Naming Anions(-) Use the name of the nonmetal with the ending –ide.
Example: F-
Fluoride

16. Ionic Compounds Are made up of: a metal and a nonmetal ion.
polyatomic ions.

17. Naming Ionic Compounds, a First Look
Example: NaF
Sodium Fluoride

18. Example:
Which of the following compounds are ionic?
NaCl
CO2 CO KF

19. Example:
Which of the following compounds are ionic?
NaCl
CO2 CO KF

20. Some Common Ions

21. Bonding Elements that do not have a complete octet, tend to react.
When the elements react bonds are formed.

22. Types of Bonds
Ionic
Metallic
Covalent

23. Ionic Bonds
Bonds that are formed by transfer of electrons from one element to the other.
Each element (now an ion) will have a complete octet after the transfer of electrons.

24. Chemical Formula
A representation of the kinds and number of atoms in a substance.
Example: KCl, Mg Cl2