Bohrium (Bh). Diagram of the nuclear composition, electron configuration, chemical data, and valence (outer electron) orbitals of an atom of bohrium-2
Bohrium (Bh). Diagram of the nuclear composition, electron configuration, chemical data, and valence (outer electron) orbitals of an atom of bohrium-272 (atomic number: 107), an isotope of this radioactive element. The nucleus consists of 107 protons (red) and 165 neutrons (orange). 107 electrons (white) successively occupy available electron shells (rings). Bohrium, named after Niels Bohr and first synthesised in 1981, is a transactinide and transition metal in group 7, period 7, and the d-block of the periodic table. Bohrium-272 has a half-life of seconds.
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Photo credit: © CARLOS CLARIVAN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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