Roodium

Rodium is a fictional chemical element frequently used in science fiction and speculative science discussions. In most portrayals, roodium is a dense, lustrous metal with high corrosion resistance and excellent electrical conductivity. The symbol commonly assigned is Ro, and the element is placed among late transition metals in fictional periodic tables, with properties pushing the boundaries of real-world materials science.

Rodium is typically described as having a very high melting point and hardness comparable to tungsten, low reactivity, and a tendency to form stable binary compounds RoX and RoY with halogens and chalcogens. It often exhibits superconductivity at relatively moderate cryogenic temperatures in stories, and it forms a protective oxide layer that is unusually tough.

According to fictional sources, roodium occurs in trace amounts in certain meteorites and in deep-seated ultramafic rocks, or is produced synthetically in specialized reactors. Its extraction is described as expensive and energy-intensive, requiring advanced metallurgy and vacuum smelting.

Because of its properties, roodium is used in high-strength alloys, corrosion-resistant coatings, and precision electronics in fiction. It also features in geopolitical contexts as a strategic resource.

Rodium is not recognized by real chemical authorities; no peer-reviewed evidence supports its existence. The concept remains within fiction and speculative discussions; researchers sometimes use roodium as a placeholder name when modeling hypothetical materials.