Superactinide

The superactinides are a group of hypothetical elements that are predicted to be elements 121-156. One of these elements is expected to have a magic number of protons and neutrons which is unbihexium. An isotope of unbihexium is expected to have 126 protons and 184 neutrons. Before the Superactinides, there are Ununennium and Unbinilium.