MCQOPTIONS
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| 1. |
If the energy of the electron in the 2nd orbit of hydrogen is -3.4 eV, then how much is the energy (in eV) in the 3rd orbit? |
| A. | - 1.511 |
| B. | 2.22 |
| C. | - 5.1 |
| D. | -13.6 |
| Answer» B. 2.22 | |