How is the radius of an electronic orbit related to principle quantum number?

Explanation

The relation between the radius (r) of the electronic orbit and the principal quantum number (n) is given by,
`r=(n^(2)h^(2))/(4pi^(2)mZe^(2))" "therefore rprop n^(2)`.
Therefore, the radius of the orbiit is directly proportional to the square of the principal quantum number.