question archive The He ion contains only one electron and is therefore a hydrogen-like ion
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The He ion contains only one electron and is therefore a hydrogen-like ion. Calculate the wavelengths, in increasing order, of the first four transitions in the Balmer series of the He
+
mathrm{He^+}
He+
ion. Compare these wavelengths with the same transitions in an H atom. Comment on the differences. (The Rydberg constant for He is