Calculate the energy of a `He^(+)ion` in its first excited state solution

Explanation

To calculate the energy of a \( \text{He}^+ \) ion in its first excited state, we can use the formula for the energy levels of hydrogen-like atoms:

\[ E_n = -\frac{13.6 \, Z^2}{n^2} \, \text{eV} \]

where:
- \( E_n \) is the energy of the level,
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