Plutonium (Pu). Diagram of the nuclear composition, electron configuration, chemical data, and valence (outer electron) orbitals of an atom of plutoni
Plutonium (Pu). Diagram of the nuclear composition, electron configuration, chemical data, and valence (outer electron) orbitals of an atom of plutonium-244 (atomic number: 94), the most stable isotope of this element. The nucleus consists of 94 protons (red) and 150 neutrons (orange). 94 electrons (white) successively occupy available electron shells (rings). Plutonium is an actinide and transuranic element in period 7, and the f-block of the periodic table. Actinides are soft radioactive metals. The nucleus of plutonium-244 (half-life: 80 million years) emits an alpha particle to form uranium-240. Other plutonium isotopes are used in nuclear fuels and weapons.
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Photo credit: © CARLOS CLARIVAN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
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