Ununtrium (Uut). Diagram of the nuclear composition, electron configuration, chemical data, and valence (outer electron) orbitals of an atom of ununtr


Ununtrium (Uut). Diagram of the nuclear composition, electron configuration, chemical data, and valence (outer electron) orbitals of an atom of ununtrium-284 (atomic number: 113), an isotope of this radioactive element. The nucleus consists of 113 protons (red) and 171 neutrons (orange). 113 electrons (white) successively occupy available electron shells (rings). Ununtrium is a temporary name (2003 synthesis not yet official). It is a transactinide of unknown properties in group 13, period 7, and the p-block of the periodic table. Ununtrium-284 has a half-life of seconds.


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