Iron: Paramagnetic and Last Fusion Product Iron seems to have many mysterious properties: 1. Strongest ferromagnetic rare earth element. 2. Last stage of fusion in stars to yield positive energy. 3. Heaviest of the ten most abundant elements. I can imagine how 2 and 3 are likely related. What about 1? Is there a reason why we might expect the end of the fusion chain to be ferromagnetic? I should probably start by asking, what makes Iron ferromagnetic? Is it some property of the outermost electron shell? Thanks!