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# Periodic patterns

### Periodic table and the patterns it makes

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)
Created by: lopez.melissam