Statement-I : Enthalpy of formation of graphite is zero but that of diamond is non-zero.\ Statement

Question

Statement-I : Enthalpy of formation of graphite is zero but that of diamond is non-zero.\ Statement-II : Enthalpy of formation of the most stable allotrope is taken as zero.\

Professor PC Thomas Classes · Answer

(a) : Graphite is the most stable form and diamond is the hardest form.