1. Examples: Ions and Atomic Symbol Notation

2. Example Determine the charge of the following ion. Chlorine gains one electron.

3. Example Determine the oxidation number of the following ion. Magnesium loses two electrons.

4. Example How many electrons are in: Aluminum with a +3 oxidation number

5. Example How many electrons are in: Sulfur-32 with an oxidation number of -2

6. You Try Determine the oxidation number of the following ions. Fluorine gains one electron. How many electrons are in: Iron-56 with a +3 charge.

7. Example Write the following in atomic symbol notation Oxygen with 7 neutrons and 8 protons

8. Example Write the following in atomic symbol notation An element with 10 protons and 11 neutrons

9. Example Write the following in atomic symbol notation Chlorine with 16 neutrons and 18 electrons

10. Example Write the following in atomic symbol notation An element with 1 proton, 1 neutron, and 0 electrons

11. You Try Write the following in atomic symbol notation Lead with 125 neutrons An element with 25 protons, 30 neutrons, and 23 electrons. Neon with 10 neutrons An element with 19 protons and 20 neutrons