| A | B |
|---|
| Bohr | Put electrons in energy levels |
| Schrodinger | came up with the concept of orbitals |
| de Broglie | Said electrons had a dual nature |
| Heisenberg | stated the uncertainty principle |
| Pauli | Had the exclusion principle |
| orbital | place where the electron is found 90% of the time |
| ionization energy | the amount of energy needed to remove an electron from an atom |
| electronegativity | The attraction for an electron |
| The largest atomic size | Francium |
| The largest ionization energy | Helium |
| The largest electronegativity | Flourine |
| The unit for frequency | hertz |
| element are arranged on the periodic table | according to atomic number |
| Mendeleev had his elements arranged | according to atomic mass |
| How many electrons can occupy the 4th energy level | 32 |
| How many electrons can occupy the 5th energy level | 50 |
| shape of an S oribital | sphere |
| shape of a P orbital | figure 8 |
| Highest energy color | violet |
| Lowest frequency color | red |
| Group A number | Tells electrons in outer shell |
| Period number | Tells highest energy level of atom |
| ion | charged particle |
| quantum | a bundle of energy that moves an electron from one energy level to another |
| period 2 group 6 element | oxygen |
| 4p3 | Arsenic |
| an alkali metal | sodium |
| Speed of waves formula | frequency x wavelength |
