Berkelium, atomic structure

Berkelium, atomic structure

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This image is part of the sequence science and technology: simple electron configurations of the elements

Credit: SCIENCE PHOTO LIBRARY

Caption: Berkelium (Bk). Diagram of the nuclear composition and electron configuration of an atom of berkelium-247 (atomic number: 97), the most stable isotope of this element. The nucleus consists of 97 protons (red) and 150 neutrons (blue). 97 electrons (green) bind to the nucleus, successively occupying available electron shells (rings). Berkelium, named for where it was first synthesised in 1949, is an actinide and transuranic element in period 7, and the f-block of the periodic table. Actinides are soft radioactive metals. Berkelium-247 has a half-life of 1380 years, its nucleus emitting an alpha particle to form americium-243.

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