In the absence of external magnetic field, d-orbital is — Atomic Structure Chemistry Question

💡 Solution & Explanation

A d-subshell ($l=2$) consists of 5 individual orbitals corresponding to $m = -2, -1, 0, 1, 2$. In the absence of an external magnetic field, these 5 orbitals have the same energy, making them 5-fold degenerate. Therefore, correct answer is B.