Given that the Bohr radius of hydrogen atom is `5.3xx10^(-11)` m . Determine its radius in the first excited state and calculate the total energy in this state.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Determine the radius in the first excited state (n=2)

The formula for the radius of the nth orbit in a hydrogen atom according to Bohr's model is given by:

\[
r_n = 0.53 \, \text{Å} \cdot n^2
...