Which of the following oxides behaves as a conductor or an insulator depending on temperature? — Solid State Chemistry Question

💡 Solution & Explanation

While many transition metal oxides are consistently metallic (like TiO or CrO$_2$) or consistently insulating (like SiO$_2$), specific oxides such as VO, VO$_2$, VO$_3$, and TiO$_3$ demonstrate a prominent temperature-dependent phase transition between metallic conductor and insulator behaviors. Therefore, correct answer is C,D.