The energy level diagram of an element is given here. Which transition corresponds to the emission of a spectral line of wavelength 102.7nm?
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As `lambda=102.7nm=102.7xx10^-9m`. `:.` Energy of emitted photon `E=(hc)/lambda=(6.6xx10^(-34)xx3xx10^8)/(102.7xx10^-9)` `=1.935xx10^(-18)J=(1.935xx10^(-18))/(1.6xx10^(-19))eV` `=12.1eV` Correspoding to Transition D `E=-1.5-(-13.6)eV=12.1eV`
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