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

💡 Solution & Explanation

Statement I is correct: heating a metal increases lattice vibrations which scatter mobile electrons and lower conductivity, whereas heating an electrolyte lowers viscosity and increases ionic mobility/dissociation, raising conductivity. Statement II is false: the defining characteristic of metallic bonding is a "sea" of highly mobile, delocalized valence electrons that are *not* tightly held by individual nuclei. Therefore, correct answer is C.