1. Chapter 5 – Ions and Ionic Compounds
5.1 – Simple Ions

2. Chemical Reactivity Tied to e- configuration Noble Gasses
Octet Rule – a concept in chemical bonding theory that is based on the assumption that atoms tend to have either empty valence shells or full valence shells of 8 electrons
Alkali Metals and Halogens

3. Valence Electrons From short hand e- config.
Atoms gain or lose e- to be stable
When it gains or loses, it becomes an ion
Ion – an atom, radical, or molecule that has + or – one or more e- and has a negative or positive charge

4. Ions Cation – an ion that has a positive charge
Lost an electron
Anion – an ion that has a negative charge
Gained an electron

5. Chlorine Atom

6. Stable Ions Behave differently than noble gases – diff # of p+
Has an electrical charge
Conducts electricity in water
Ions will still bond with others
Transition metals form cations and some form multiple cations

7. Ions and Parent Atoms
Na and Cl are very reactive, but as ions dissolved in water, they are not reactive at all