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Americium, atomic structure

Americium, atomic structure

C045/6443

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53.2 MB (2.2 MB compressed)

4800 x 3872 pixels

40.6 x 32.8 cm ⏐ 16.0 x 12.9 in (300dpi)

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Credit

CARLOS CLARIVAN / SCIENCE PHOTO LIBRARY CARLOS CLARIVAN / SCIENCE PHOTO LIBRARY

Caption

Diagram of the nuclear composition, electron configuration, and valence (outer electron) orbitals of an atom of americium-243 (atomic number: 95), the most stable isotope of this element. The nucleus consists of 95 protons (blue) and 148 neutrons (red). Americium, named for the Americas and first synthesised in 1944, is an actinide and transuranic element in period 7, and the f-block of the periodic table. Actinides are soft radioactive metals. Americium-243 has a half-life of 7370 years, its nucleus emitting an alpha particle to form neptunium-239.

Release details

Model release not required. Property release not required.

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