Transramson elements are incredibly unstable to fission resulting in incredibly short half-lives, often less than a nanosecond. Element 184 would be the most stable transramson element with a half-life of 13 seconds, due to closed proton shell.
Quantum and relativistic effects would be more pronounced than lighter, transoganesson elements, due to more electrons going near the speed of light. Electrons in 1s orbital would need to go faster than light starting at element 174; it is impossible for any physical object to go faster than light. Therefore the periodic table ends at element 173 (Ultimium).