The Li2+ ion is hydrogenic and has a Lyman series of lines at740 747 em·', 877 924 em·', 925 933 em·'. and beyond. (a) Showthat the energy levels are of the form -hcR,;!ri' and find thevalue of RLi for this ion. (b) Go on to predict the wavenumbers ofthe two longest wavelength transitions of the Balmer series ofthe ion and (c) find the ionization energy of the ion.

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The Li2
+ ion is hydrogenic and has a Lyman series of lines at
740 747 em·', 877 924 em·', 925 933 em·'. and beyond. (a) Show
that the energy levels are of the form -hcR,;!ri' and find the
value of RLi for this ion. (b) Go on to predict the wavenumbers of
the two longest wavelength transitions of the Balmer series of
the ion and (c) find the ionization energy of the ion.

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