As the orbit number increases, the distance between two consecutive orbits ( = radius of first orbit — Atomic Structure Chemistry Question

💡 Solution & Explanation

The distance between consecutive orbits $n$ and $n-1$ is given by $r_n - r_{n-1} = r_1 n^2 - r_1 (n-1)^2 = r_1 (n^2 - (n^2 - 2n + 1)) = r_1 (2n - 1)$, where $n$ is the higher orbit number. Therefore, correct answer is C.