I was wondering why the elements Cr, Cu & Mn have different orbital diagrams. Also why is it different?
Orbital diagrams are dealing with the amount of electrons in shells, like s, p, d, and f orbitals. Cr has twenty four electrons so the configuration would be 1(s^2)...3d^4. Copper would end in 3d^9 and Mn would end in 3d^5. Although they all end in the same orbital(level) they have different amounts of electrons in them and the sizes may differ. It also may effect the reactivity of the elements and other properties like size.