| Term | Definition |
|---|
| quantized | e- can only exist @ specific energy levels (separated by specific intervals) |
| Pauli Exclusion Principle | no two e- can have the same quantum #s |
| diamagnetic | all e- spin paired |
| paramagnetic | not all e- paired and strongly affected by electric fields |
| John Dalton | ideas about atoms "elements"; compounds have the same ratio of elements |
| Dmitri Mendeleev / Lathar Meyer | Proposed arranging elements |
| Thomson | Discovered e-; plum pudding model |
| Milikan | Charge of e- w/ oil drops and electricity |
| Rutherford | Gold foil experiment - atoms bounced - mostly empty space |
| Werner Heisenberg | cannot know both position and momentum @ same time |
| de Broglie | matter has wave characteristics λ = h / mν |
| Atomic Radius | move right ↓ ; move down ↑ |
| Ionization Energy | move right ↑ ; move down ↓ (2nd ionization > 1st) (big jump after shell is empty) |
| E- Affinity | move right, energy given off ↑ ; almost no change going down |
| Electronegativity | move right ↑ ; move down ↓ |
| Aufbau Principle | e- orbitals fill by increasing energy |
| Hund's Rule | When e- added to subshell, always occupy empty orbital and only pair when necessary |
Combine with other sets
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