Which of the following statement(s) is/are true regarding the electrical properties of solids? — Solid State Chemistry Question

💡 Solution & Explanation

The conductivity of metals is vastly greater than insulators, making A incorrect. Certain oxides, notably VO, VO$_2$, VO$_3$, and TiO$_3$, undergo distinct metal-insulator transitions depending on temperature. Solid iodine is a molecular solid with localized electrons, making it non-conducting. Doping inherently increases conductivity over pure semiconductors, making D false. Therefore, correct answer is B,C.