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E=h * n

energy of a photon where h=plank's constant (6.63x10^-34 J x S) and n = FREQUENCY

C=speed of light

3.00x10^8 m/s

C= v * (wavelength)

v=frequency(hertz); wavelength MUST BE IN METERS

(delta)E when electron changed levels

= -2.18x10^-18*Z^2*(1/ni^2 - 1/n2^2) where Z=atomic charge (ONLY FOR SINGLE ELECTRON SPECIES)

rhydberg constant (Rh)=

=2.18 x 10-18 J