Calculate the radius ratio of `2^(nd)` orbit of hydrogen and `3^(rd)` orbit of `Li^(+2)`

Explanation

To calculate the radius ratio of the \(2^{nd}\) orbit of hydrogen and the \(3^{rd}\) orbit of \(Li^{+2}\), we will follow these steps:

### Step 1: Understand the formula for the radius of an orbit
The radius \(R\) of an orbit in a hydrogen-like atom is given by the formula:
\[ R_n = \frac{0.529 \, n^2}{Z} \, \text{Å} \]
where:
...