Raising a ground-state hydrogen atom to the n = 3 level needs how much energy?
A12.09 eV
B13.6 eV
C1.51 eV
D10.2 eV
Answer & Solution
Correct answer: A. 12.09 eV
E3 = -1.51 eV, so E3 - E1 = -1.51 eV + 13.6 eV = 12.09 eV.
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