Which energy state of doubly ionized lithium \( \left(\mathrm{Li}^{++}\right) \)has the same ene...

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Which energy state of doubly ionized lithium \( \left(\mathrm{Li}^{++}\right) \)has the same energy as that of the ground state of hydrogen? Given \( Z \) for lithium \( =3 \) :
(a) \( n=1 \)
(b) \( n=2 \)
(c) \( n=3 \)
(d) \( n=4 \)
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