Read the Assertion and Reason below and choose the correct option. — Atomic Structure Chemistry Question

💡 Solution & Explanation

Statement I is incorrect because the $d_{z^2}$ orbital has two conical nodal surfaces rather than planar nodes, and it has a high electron density (the "doughnut" ring) located precisely in the XY-plane. Statement II is correct since for any d-orbital ($l=2$), the number of angular nodes is $l=2$. Therefore, correct answer is D.