1. I’ve lost my electron! Are you sure?! I’m Positive !

2. Fr Rb Cs K Na Li H Group 1 Eye test

3. Diagram representing the size of ions

4. Atoms Ions Electron Configuration 1s 2 2s 2 2p 6 3s 2 3p 5 Electron Configuration 1s 2 2s 2 2p 6 3s 2 3p 6 Electron Configuration 1s 2 2s 2 2p 6 3s 1 Electron Configuration 1s 2 2s 2 2p 6 Ions

5. Ion Positive ion---removal of electron Negative ion--- addition of electron Ions are formed in order for atoms to achieve a noble gas configuration How are positive and negative ions formed? Why are they formed?

6. Ionic size Metallic elements easily lose electrons. Non-metals more readily gain electrons. Gaining electrons completes the shell whereas losing electrons empties the shell. Gaining electrons makes the ion bigger than the atom Losing electrons produces an ion that is smaller than the original atom What type of atoms tend to form positive ions? How does losing or gaining an electron affect the size of the atom (ion)?

7. Positive ions Positive ions are always smaller that the neutral atom. Loss of outer shell electrons.

8. Negative Ions Negative ions are always larger than the neutral atom. Gaining electrons.

9. Ion size trends in columns.

10. Ion size trends in periods.

11. For ions formed from elements in the same period. The more negative the bigger Ion size trends in periods.