Ununpentium (Uup). Diagram of the nuclear composition,electron configuration,chemical data,and valence (outer electron) orbitals of an atom of ununpentium-288 (atomic number: 115),the most stable isotope of this radioactive element. The nucleus consists of 115 protons (red) and 173 neutrons (orange). 115 electrons (white) successively occupy available electron shells (rings). Ununpentium is a temporary name (2003 synthesis not yet official). It is a transactinide of unknown properties in group 15,period 7,and the p-block of the periodic table. The ununpentium-288 nucleus (half-life: 173 milliseconds) emits an alpha particle to form ununtrium-284 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Clarivan, Carlos |
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