The quantum number \( \mathrm{n} \) corresponding to the excited state of \( \mathrm{He}^{+} \)i...

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The quantum number \( \mathrm{n} \) corresponding to the excited state of \( \mathrm{He}^{+} \)ion if on transition to the ground state that ion emits two photons in succession with wavelengths 108.5 and \( 30.4 \mathrm{~nm} \) is
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