Darmstadtium (Ds)

Unknown

Darmstadtium is a superheavy element predicted to be the most reactive platinum-group metal, and with [Rn] 5f¹⁴ 6d⁸ 7s², darmstadtium (half-life 12.7 seconds for Ds-281) is expected to be a very volatile metal. Relativistic effects make its 7s electrons behave like those of a group 10 element, but with unique chemical properties.

Key metrics

Density22.5g/cm³predicted

Melting point2,000Kpredicted

Boiling point4,300Kpredicted

Electronegativity1.3Paulingpredicted

Discovery

1994discovered

Discovered by: GSI Darmstadt
Reactivity profile: Insufficient data
Reactivity: Unknown
Bonding: Metallic

Electron configuration

\textcolor{#6b7280}{[Rn]}\; \textcolor{#a855f7}{5_{f}^{14}}\; \textcolor{#22c55e}{6_{d}^{8}}\; \textcolor{#ef4444}{7_{s}^{2}}

[Rn] 5f14 6d8 7s2

Wave function

\Psi_{\text{Ds}} \approx \frac{1}{\sqrt{110!}} \det \left| \chi_1(\mathbf{r}_1) \dots \chi_{110}(\mathbf{r}_{110}) \right|

Probability density $|\Psi|^2$ across the Ds 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: 128 pmpredicted
Ionization energy: 640 kJ/molpredicted
Electron affinity: 0 kJ/molpredicted
Crystal structure: Hexagonal close-packed (predicted)

Oxidation statespredicted

+2+4

Acid/base

Unknown

Strongly acidicStrongly basic

State at 25 °CSolid

2000 K4300 K298 K

predicted

Unknown

Key metrics

Density22.5g/cm³predicted

Melting point2,000Kpredicted

Boiling point4,300Kpredicted

Electronegativity1.3Paulingpredicted

Discovery

1994discovered

Discovered by: GSI Darmstadt
Reactivity profile: Insufficient data
Reactivity: Unknown
Bonding: Metallic

Electron configuration

\textcolor{#6b7280}{[Rn]}\; \textcolor{#a855f7}{5_{f}^{14}}\; \textcolor{#22c55e}{6_{d}^{8}}\; \textcolor{#ef4444}{7_{s}^{2}}

[Rn] 5f14 6d8 7s2

Wave function

\Psi_{\text{Ds}} \approx \frac{1}{\sqrt{110!}} \det \left| \chi_1(\mathbf{r}_1) \dots \chi_{110}(\mathbf{r}_{110}) \right|

Probability density $|\Psi|^2$ across the Ds 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: 128 pmpredicted
Ionization energy: 640 kJ/molpredicted
Electron affinity: 0 kJ/molpredicted
Crystal structure: Hexagonal close-packed (predicted)

Oxidation statespredicted

+2+4

Acid/base

Unknown

Strongly acidicStrongly basic

State at 25 °CSolid

2000 K4300 K298 K

predicted