A hydrogen atom is in its excited state with energy -1.51 eV. The angular momentum of the electron in this state is `(xh)/(2pi)` then write the value of 'x'

Explanation

To find the value of 'x' for the angular momentum of an electron in an excited state of a hydrogen atom, we can follow these steps:

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