Determine the minimum wavelength of a photon the can cause ionization of He ^(+) ion.

Explanation

To determine the minimum wavelength of a photon that can cause ionization of a He^+ ion, we can follow these steps:

### Step 1: Understand the Energy Requirement for Ionization
The energy required to ionize a He^+ ion from its ground state can be calculated using the formula for the energy levels of hydrogen-like atoms:
\[ E_n = -\frac{13.6 \, \text{eV} \cdot Z^2}{n^2} \]
where \( Z \) is the atomic number and \( n \) is the principal quantum number.
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