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11 July, 15:48

An electron with a kinetic energy of 3.90 ev collides with a sodium atom.

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  1. 11 July, 15:57
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    The wavelength transition line is

    Δ = hc/Δ∈

    =1240 e V. nm/3.75e V - 0,0ev

    =330. nm

    Another wavelength transisiton is

    Δ = hc/Δ∈

    1240e V. nm/3.19e V - 2.104e V

    1140. nm

    Some other wavelength transition are;

    590, 816, 2180, 8860.
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