Unquadtrium

Unquadtrium is the temporary systematic name assigned to hypothetical element 143, which has not been discovered. Its symbol is Uqt.

Connect

Atomic number: The number of protons in an atom’s nucleus, defining the identity of its element. Element 143 would have 143 protons by definition.
Nuclear shell model: A model describing nucleons as occupying quantized energy levels within an atomic nucleus. Shell structure informs estimates of stability for nuclei near atomic number 143.
Heavy ion fusion: A nuclear reaction in which accelerated heavy atomic nuclei fuse to form a heavier nucleus. Fusion reactions are a possible route to producing nuclei with extremely high atomic numbers.
Oganesson: A synthetic chemical element with atomic number 118, the heaviest element currently confirmed. It marks the present confirmed endpoint, 25 atomic numbers below Unquadtrium.
Periodic table: A tabular arrangement of chemical elements ordered by atomic number and recurring properties. It provides the framework for predicting where element 143 might fit.
Island of stability: A predicted region of superheavy nuclei with comparatively long half-lives due to nuclear shell effects. It motivates searches for superheavy elements, though its location and reach remain uncertain.
Superheavy element synthesis: The production of superheavy nuclei by inducing nuclear reactions between target and projectile nuclei. Any attempt to create element 143 would extend this experimental program.
Nihonium: A synthetic chemical element with atomic number 113, discovered through nuclear-reaction experiments. It is a known element in the same broad superheavy region, unlike hypothetical element 143.
IUPAC systematic element name: A temporary element name formed from digit roots and the suffix -ium under IUPAC rules. Unquadtrium encodes the digits of atomic number 143.
Nuclear fission: The splitting of an atomic nucleus into smaller nuclei, often releasing energy and neutrons. Fission competes with radioactive decay in determining whether a superheavy nucleus survives.