Fe2O3, also known as ferric oxide or hematite, is a compound containing iron Fe and oxygen O . To predict the reactivity of this compound, we need to consider the electronic configuration of the transition metal iron Fe .Iron has an atomic number of 26, and its electronic configuration can be written as [Ar] 3d^6 4s^2. In Fe2O3, iron exists in its +3 oxidation state Fe^3+ , which means it has lost three electrons. The electronic configuration of Fe^3+ is [Ar] 3d^5.The reactivity of a transition metal compound is influenced by the number of unpaired electrons in its d-orbitals. In the case of Fe^3+, there are five unpaired electrons in its 3d orbitals. A higher number of unpaired electrons generally results in higher reactivity due to the increased possibility of forming bonds with other atoms or molecules.Based on its electronic configuration, the predicted reactivity of the transition metal compound Fe2O3 is relatively high due to the presence of five unpaired electrons in the 3d orbitals of Fe^3+. This high reactivity is consistent with the various applications of Fe2O3, such as in the production of iron, as a pigment in paints and coatings, and as a catalyst in various chemical reactions.