The energy of electron in an excited hydrogen atom is `-3.4eV`. Its angular momentum according to bohr's theory will be

Options

A. `h//pi`
B. `h//2pi`
C. `nh//2pi`(`n` is an integer)
D. `2h//pi`

Explanation

To find the angular momentum of an electron in an excited hydrogen atom with an energy of -3.4 eV, we can follow these steps:

### Step 1: Understand the relationship between energy and quantum number (n)
According to Bohr's model of the hydrogen atom, the energy (E) of an electron in a particular energy level is given by the formula:
\[ E = -\frac{13.6 \, \text{eV}}{n^2} \]
where \( n \) is the principal quantum number.
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