Questions and Problems238c lid it take an om Pioneer 11 1.54 Calculate the longe

Question

Questions and Problems238c lid it take an om Pioneer 11 1.54 Calculate the longest wavelength of netic radiation emitted by the hydrogen atom a transition from the n 6 level. length equal red radiation 7.55 What is the difference in energy between the two as since been levels responsible for the violet emission line of the calcium nsition? What atom at 422.7 nm the two 7.56 What is the difference in energy between it takes for levels responsible for a red emission line of the st ion of the ce atom at 640.8 nm the frequency de Broglie Waves Note: Masses of tha t wavelength?

Explanation / Answer

energy of red emission line of Strontium atom with wavelength = 640.8 nm

Energy(E) = hc/l

E = ? joule

   h = planks constant = 6.625*10^-34 j.s

   c = light velocity = 3*10^8 m/s

   l = wavelength = 640.8 nm = 640.8*10^-9 m

E = ((6.625*10^-34)*(3*10^8)/(640.8*10^-9))

   = 3.1*10^-19 joule

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