In a single-electron species like a hydrogen atom, which of the following sets of orbitals are stric — Atomic Structure Chemistry Question

💡 Solution & Explanation

In a single-electron species like Hydrogen, orbital energy depends ONLY on the principal quantum number $n$. The $(n+l)$ rule is invalid here. Thus, all subshells within the same principal shell ($4s, 4p, 4d, 4f$) are perfectly degenerate.