In a hydrogen atom, the energy of an electron in first Bohr's orbit is `13.12 xx 10^(5) J mol^(-1)`. What is the energy required for its excitation to Bohr's second orbit ?

Explanation

To solve the problem of finding the energy required for the excitation of an electron in a hydrogen atom from the first Bohr orbit to the second Bohr orbit, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Energy Levels 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{2 \pi^2 m e^4}{n^2 h^2}
...