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1. |
The energy of hydrogen atom in its ground state is - 13.6 eV. The energy of the level corresponding to the quantum number n is equal 5 is |
A. | - 5.40 eV |
B. | - 2.72 eV |
C. | - 0.85 eV |
D. | - 0.54 eV |
Answer» E. | |