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Uranium, atomic structure

Uranium, atomic structure

C045/6440

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53.2 MB (2.1 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 uranium-238 (atomic number: 92), the most stable isotope of this element. The nucleus consists of 92 protons (blue) and 146 neutrons (red). Uranium is an actinide in period 7, and the f-block of the periodic table. Actinides are soft radioactive metals. Uranium-238, used as a nuclear fuel, contributes to the Earth's internal heat. It has a half-life of 4.5 billion years. Its nucleus decays by spontaneous fission or emitting an alpha particle to form thorium-234.

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Model release not required. Property release not required.

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