3. The E/RH value for an electron at n = 2 in a Li²⁺ cation is x, where E = energy, R_H = Rydberg constant = 13.61 eV, n = principal quantum number. The nearest whole number of x is
(A) 1
(B) 2
(C) 3
(D) 4
(E) none of the above

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