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Periodic patterns
Periodic table and the patterns it makes
| Question | Answer |
|---|---|
| Atomic Radii | Increases going down, decreases going across |
| Ionic Radii | decreases going down, increases going across |
| Ionization Energy | decreases going down, increases going across (except 6A) |
| Electron Affinity | increases going across, decreases going down |
| Electronegativity | increase going across, decrease going down |
| equation of speed of light | c=(wavelength)(frequency) c=2.99*10^8 |
| energy equation | E=hc/(wavelength) or E=h(frequency) h=6.626*10^-34 |
| Heisenberg's Uncertainty Principle | we cannot know where the e- or velocity is |
| principle quantum numbers (n) | size and level of orbital |
| angular-momentum quantum number (l) | if n=n, l=0 through n-1 shape of orbital |
| magnetic quantum number (ml) | spatial orientation, if l=l, ml= -l through l |
| Spin quantum (ms) | plus or minus 1/2 |
| Atomic Radii | Increases going down, decreases going across |
| Ionic Radii | decreases going down, increases going across |
| Ionization Energy | decreases going down, increases going across (except 6A) |
| Electron Affinity | increases going across, decreases going down |
| Electronegativity | increase going across, decrease going down |
| equation of speed of light | c=(wavelength)(frequency) c=2.99*10^8 |
| energy equation | E=hc/(wavelength) or E=h(frequency) h=6.626*10^-34 |
| Heisenberg's Uncertainty Principle | we cannot know where the e- or velocity is |
| principle quantum numbers (n) | size and level of orbital |
| angular-momentum quantum number (l) | if n=n, l=0 through n-1 shape of orbital |
| magnetic quantum number (ml) | spatial orientation, if l=l, ml= -l through l |
| Spin quantum (ms) | plus or minus 1/2 |
| effective nuclear charge Zeff | nuclear charge felt by e- |
| Electron Affinity (def) | the E change that occurs when an e- if added to an isolated atom in gaseous state. (pos. charge, E is gained, neg. charge E is released) |