Isoelecronic atoms have same number of electrons but different nuclear charge. It is said that many of the chemical properties of these elements are equal or at least similar.
Can I form solids with isoelectronic atoms and how do their band structures differ with respect to the standard versions of the solids?
To make a specific example, take a bunch of Nickel atoms, ionize each of them 2 times, then you have a bunch of Iron-like Nickel atoms. Get them together and let them form a iron solid metal compound. Does this formation happen? What is the band gap with respect to the normal Iron band gap?
I expect that making solids out of only isoelectronic atoms might not be possible, since the electrostatic repulsion prevents chemical bonds from forming. However, let us say that I want to make a solid compound with some iron atoms and some iron-like nickel atoms. How does the band gap changes in general with the doping level?