Unnilquadium is a chemical element with an atomic number of 104, also known as Rutherfordium. It belongs to the d-block elements in the periodic table and is a highly radioactive element. If you are looking for synonyms for unnilquadium, some of the common names used for this element include Element 104, Unq, and RF. Due to its unstable nature, unnilquadium is not found in nature but can be synthesized in a laboratory setting. Its discovery is attributed to the Russian team led by Georgy Flyorov and was officially recognized in 1997 by the International Union of Pure and Applied Chemistry (IUPAC).