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Figure 1 shows part of an energy level diagram for a hydrogen atom.
n=4 ------ -0.85eV
n=3 ------ -1.50eV
n=2 ------ -3.40eV
n=1 ------ -13.60eV
When an electron of energy 12.1eV collides with the atom, photons of three different energies are emitted.
[a] on Figure 1 show with arrows the transitions responsible for these photons.
> ?
Calculate the wavelength of the photon with the smallest energy. Give your answer to an appropriate number of significant figures.
>(E = hcl入)
>energy in joules = (??) x 1.6 x 10^-19 = (?)(J)
n=4 ------ -0.85eV
n=3 ------ -1.50eV
n=2 ------ -3.40eV
n=1 ------ -13.60eV
When an electron of energy 12.1eV collides with the atom, photons of three different energies are emitted.
[a] on Figure 1 show with arrows the transitions responsible for these photons.
> ?
Calculate the wavelength of the photon with the smallest energy. Give your answer to an appropriate number of significant figures.
>(E = hcl入)
>energy in joules = (??) x 1.6 x 10^-19 = (?)(J)