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# phyx eqns Atomic

Energy (three sort of) E = hf or E = Pc or E= nhf h = planck's constant n = number of atoms f= frequency
Input energy of a Photon for the photoelectric effect hf = KE + φ φ= work function (energy needed to get the electron out of the metal)
Wavelength λ = h/p or λ = h/mv p= momentum
Einstein's Energy E= mc^2
Kinetic Energy with T KE = 3/2 kT
Ionization Energy of Hydrogen E = 13.6 eV
Energy of an electron on the nth level in an hydrogen atom E1 = -13.6 eV/ n^2
Ionization Energy of any Atom E = 13.6 eV Z^2 Z= Number of protons n= energy level
Energy of an electron on the nth level in any atom E = 13.6 eV Z^2 / n^2
Force on the electron from a Magnetic Field F = qvB q= charge
Energy with Wavelength E = hc / λ
Angular Momentum L = mvr = nh/ 2π n = 1, 2, 3,... r= radius of the nth possible orbit
Speed of a photon c=fλ
Created by: cstephens125

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