Calculate the energy of an electron in the second Bohr's orbit of an excited hydrogen atom the energy of electron in the first Bohr orbit is `-2.18 xx 10^(-11) erg`

Explanation

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

### Step 1: Understand the Energy Formula
The energy of an electron in the nth orbit of a hydrogen atom is given by the formula:
\[ E_n = -\frac{Z^2 \cdot k}{n^2} \]
where:
- \( E_n \) is the energy of the electron in the nth orbit,
- \( Z \) is the atomic number (for hydrogen, \( Z = 1 \)),
...