1. Half-Lives

2. 100 Atoms – 0 half-lives

3. 50 Atoms Parent / 50 Atoms Daughter 1 half-life

4. 25 Atoms Parent / 75 Atoms Daughter 2 half-lives

5. 12.5 Atoms Parent / 87.5 Atoms Daughter 3 half-lives

6. 6.25 Atoms Parent / 93.75 Atoms Daughter 4 half-lives

7. 3.125 Atoms Parent / 96.875 Atoms Daughter 5 half-lives

8. 1.5625 Atoms Parent / 98.4375 Atoms Daughter 6 half-lives

9. 0.78125 Atoms Parent / 99.21875 Atoms Daughter 7 half-lives

10. 0.390625 Atoms Parent / 99.609375 Atoms Daughter 8 half-lives

11. 0.1953125 Atoms Parent / 99.8046875 Atoms Daughter 9 half-lives

12. 0.09765625 Atoms Parent / 99.90234375 Atoms Daughter 10 half-lives