For a single component system why do the allotropes stable at high temperatures having higher enthalpies than allotropes stable at low temperatures
Answers
Answer:The difference in the magnetic orientation influences the thermal stability of the allotropes of iron.
Explanation:It is known that the allotropes of iron exist in three phases: α - phase, β- phase, and γ-phase. However, two prominent structures are the α - phase and γ-phase. Now, let us look at the two phrases: α - phase This structure is a body-centered cube. It means that the unit cell structure resembles a cube. The lattice points are in the face of the cube. This subsequently affects the magnetic structure of the iron allotrope. γ-phase This allotrope has a lattice structure. It simply means that the structure has lattice points on the face of the cube. The structure generally affects the magnetic properties of the transitional metal; hence the stability of the γ-phase compared to α-phase.