The energy of different orbitals in an atom or ion having only one electron, depends on — Atomic Structure Chemistry Question

💡 Solution & Explanation

In single-electron systems (like H, $He^+$, $Li^{2+}$), there are no electron-electron repulsions to lift the degeneracy of subshells. Thus, energy strictly depends only on the principal quantum number $n$. Therefore, correct answer is A.