MCQOPTIONS
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| 1. |
The ground state energy of hydrogen atom is -13.6 eV. The energy of second excited state of He+ ion in eV is |
| A. | -54.4 |
| B. | -3.4 |
| C. | -6.04 |
| D. | -27.2 |
| Answer» D. -27.2 | |