Which of the following solids is not an electrical conductor? — Solid State Chemistry Question

💡 Solution & Explanation

Magnesium (Mg) is a metallic conductor. Titanium monoxide (TiO) displays metallic conductivity. Iodine (I$_2$) and ice (H$_2$O) are both molecular solids where valence electrons are localized tightly in covalent bonds, thus they function as electrical insulators. Therefore, correct answer is C,D.