What is the energy required to remove an electron from second orbit of hydrogen atom ?

Explanation

To find the energy required to remove an electron from the second orbit of a hydrogen atom, we can follow these steps:

### Step 1: Understand the formula for energy levels in hydrogen
The energy of an electron in the nth orbit of a hydrogen atom is given by the formula:
\[ E_n = -\frac{13.6 \, \text{eV}}{n^2} \]
where \( E_n \) is the energy of the electron in the nth orbit, and \( n \) is the principal quantum number (orbit number).

### Step 2: Identify the values for the second orbit
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