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Astatine, atomic structure

Astatine, atomic structure

C013/1642

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4579 x 4579 pixels

38.9 x 38.9 cm ⏐ 15.3 x 15.3 in (300dpi)

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Credit

SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY

Caption

Astatine (At). Diagram of the nuclear composition and electron configuration of an atom of astatine-211 (atomic number: 85), a synthetic isotope of this element. The nucleus consists of 85 protons (red) and 126 neutrons (blue). Astatine is a radioactive halogen in group 17, period 6, and the p-block of the periodic table. Astatine-211, used in nuclear medicine, is produced by bombarding bismuth-209 with alpha particles. It has a half-life of less than 8 hours, its unstable nucleus undergoing electron capture or alpha particle decay.

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Model release not required. Property release not required.

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