sediums
Sediums are a hypothetical class of elements that do not exist in the known periodic table. The concept of sediums is not supported by current scientific understanding of atomic structure and chemical properties. The properties of elements are determined by their atomic number, which dictates the number of protons in the nucleus and subsequently the electron configuration. This configuration governs how an element interacts with other elements. The periodic table is arranged based on these fundamental principles, and all known stable and unstable elements fit within its structure.
There is no scientific basis for the existence of an element or group of elements called sediums.