How much energy is required to ionise a H - atom if the electron occupies ` n=5 ` orbit ? Compare your answer with the ionization energy of H-atom (energy required to remove the electron from ` nth` orbit ).

Explanation

To find the energy required to ionize a hydrogen atom when the electron occupies the \( n=5 \) orbit, we can use the formula for the energy of an electron in the \( n \)th orbit of a hydrogen atom:

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

### Step 1: Calculate the energy for the \( n=5 \) orbit

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