Bohrium (Bh)

Unknown

Bohrium is a superheavy Transition predicted to behave like rhenium, created atom by atom, and with [Rn] 5f¹⁴ 6d⁵ 7s², bohrium (half-life 61 seconds for Bh-270) shows relativistic stabilization of its 6d shell. Its volatile oxychloride BhO₃Cl was detected, confirming its rhenium-like chemistry.

Key metrics

Density19g/cm³predicted

Melting point2,600Kpredicted

Boiling point5,000Kpredicted

Electronegativity1.3Paulingpredicted

Discovery

1981discovered

Discovered by: GSI Darmstadt
Reactivity profile: Extremely unstable radioactive element
Reactivity: Medium
Bonding: Metallic

Electron configuration

\textcolor{#6b7280}{[Rn]}\; \textcolor{#a855f7}{5_{f}^{14}}\; \textcolor{#22c55e}{6_{d}^{5}}\; \textcolor{#ef4444}{7_{s}^{2}}

[Rn] 5f14 6d5 7s2

Wave function

\Psi_{\text{Bh}} \approx \frac{1}{\sqrt{107!}} \det \left| \chi_1(\mathbf{r}_1) \dots \chi_{107}(\mathbf{r}_{107}) \right|

Probability density $|\Psi|^2$ across the Bh valence shell.

Crystal structure

Hexagonal Close-Packed

Lattice constantsa 1.00 · b 1.00 · c 1.63

Cell anglesα 90° · β 90° · γ 120°

Coordination number12

Atoms per cell2

Atomic packing factor0.74

Physical properties

Atomic radius: 141 pmpredicted
Ionization energy: 610 kJ/molpredicted
Electron affinity: 0 kJ/molpredicted
Crystal structure: Hexagonal close-packed (predicted)

Oxidation statespredicted

Acid/base

Basic

Strongly acidicStrongly basic

State at 25 °CSolid

2600 K5000 K298 K

predicted