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Pronunciation | (BOR-ee-əm) |
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Mass number | [270] |
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Group | మూస:Infobox element/symbol-to-group/format |
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Period | period 7 |
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Block | d-block |
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Electron configuration | [Rn] 5f14 6d5 7s2[1][2] (calculated)[1][2] |
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Electrons per shell | 2, 8, 18, 32, 32, 13, 2 (predicted) |
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Phase at STP | solid (predicted)[3] |
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Density (near r.t.) | 37.1 g/cm3 (predicted)[2][4] |
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Oxidation states | (+3), (+4), (+5), +7[2][5] (parenthesized: prediction) |
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Ionization energies | - 1st: 742.9 kJ/mol
- 2nd: 1688.5 kJ/mol
- 3rd: 2566.5 kJ/mol
- (more) (all estimated)[2]
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Atomic radius | empirical: 128 pm (predicted)[2] |
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Covalent radius | 141 pm (estimated)[6] |
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Natural occurrence | synthetic |
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Crystal structure | hexagonal close-packed (hcp) (predicted)[3] |
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CAS Number | 54037-14-8 |
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Naming | after Niels Bohr |
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Discovery | Gesellschaft für Schwerionenforschung (1981) |
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Template:infobox bohrium isotopes does not exist |
Category: Bohrium | references |