Calculate the energy of an electron in the first Bohr orbit of hydrogen.

Explanation

To calculate the energy of an electron in the first Bohr orbit of hydrogen, we can follow these steps:

### Step 1: Understand the Formula for Energy in Bohr's Model
The energy of an electron in the nth orbit of a hydrogen atom is given by the formula:
\[ E_n = -\frac{13.6 \, \text{eV} \cdot Z^2}{n^2} \]
where:
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