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1. |
An electron in the n = 1 orbit of hydrogen atom is bound by 13.6 eV. If a hydrogen atom is in the n = 3 state, how much energy is required to ionize it [MP PMT 1995] |
A. | 13.6 eV |
B. | 4.53 eV |
C. | 3.4 eV |
D. | 1.51 eV |
Answer» E. | |