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+1 vote
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in Atomic and Nuclear Physics by (48.1k points)
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The ground state energy of hydrogen atom is -13.6 eV. If an electron makes a transition from an energy level -0.85 eV to -1.51 eV, Calculate the wavelenth of the spectral line emitted. To which series of hydrogen spectrum does this wavelenth belong?

1 Answer

+1 vote
by (48.5k points)
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Best answer

Here ∆E = E2 – E1 = -0.85-(-1.51). 

= 0.66 eV 

∆E = 0.66 x 1.6 x 10-19 J

= 18.84 x 10-7 

λ = 18840 Å 

This wavelength belongs to the Pachen series of the hydrogen spectrum.

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