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How much energy lifts a hydrogen electron from n = 1 to n = 2?
A10.2 eV
B13.6 eV
C3.40 eV
D12.09 eV
Answer & Solution
Correct answer: A. 10.2 eV
The gap E2 - E1 equals -3.40 eV minus -13.6 eV, which is 10.2 eV.
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