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The ground state energy of hydrogen atom...

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 -3.4 eV, calculate the wavelength of the spectral line emitted. To which series of hydrogen spectrum does this wavelength belong?

Text Solution

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`(i) hv=(hc)/(lambda)=(E_(2)-E_(1))`
`or lambda=(hc)/((E_(2)-E_(1)))`
`:. lambda=[(6.63xx10^(-34xx3xx10^(8)))/([-0.85-(3.4)]xx1.6xx10^(-19))]m`
`=4.87xx10^(-7)m`
(ii) Balamer series.
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