Darmstadtium (Ds)
transition-metalExpected to be a Solid
प्रमाणित अणुभार
[281]इलेक्ट्रॉन संरूपण
[Rn] 7s2 5f14 6d8 (भाकीत केलेले)द्रवणांक
उपलब्ध नाहीउत्कलनांक
उपलब्ध नाहीघनता
3.48e+4 kg/m³ऑक्सिडीकरण अवस्था
0, +2, +4, +6, +8विद्युतऋणता (पॉलिंग)
उपलब्ध नाहीआयनीकरण ऊर्जा (पहिली)
उपलब्ध नाहीशोधाचे वर्ष
1994अणुत्रिज्या
132 pmतपशील
Darmstadtium is a synthetic transactinide element in group 10, below nickel, palladium, and platinum. It has been produced only atom by atom in heavy-ion fusion experiments and identified from its radioactive decay chains. Its chemistry is largely unmeasured; theoretical work treats it as a very heavy platinum-group metal, with strong relativistic effects expected to influence bonding and volatility.
Darmstadtium does not occur naturally in the Earth’s crust. Darmstadtium was first synthesized by an international team of scientists from the GSI in Darmstadt, Germany, the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, the Comenius University in Bratislava, Slovakia and the University of Jyväskylä, Finland at the GSI Helmholtz Center for Heavy Ion Research in Darmstadt (Fig. IUPAC.110.1), Germany in 1994 using the nuclear reaction 208Pb (62Ni, n) 269Ds. The element was named darmstadtium after the place where the first synthesis was made [656], [657], [658], [659]. Darmstadtium has no known isotopic applications aside from scientific research.
Darmstadtium is named after the city Darmstadt, Germany.
Darmstadtium was first produced by Peter Armbruster, Gottfried Münzenber and their team working at the Gesellschaft für Schwerionenforschung in Darmstadt, Germany on November 9th, 1994. They bombarded atoms of lead with ions of nickel with a device known as a linear accelerator. This produced one atom of darmstadtium-269, an isotope with a half-life of about 0.17 milliseconds (0.00017 seconds), after at least a billion billion (1,000,000,000,000,000,000) nickel ions were fired at the lead target over the course of a week. Darmstadtium's most stable isotope, darmstadtium-281, has a half-life of about 20 seconds. About 15% of the time, it decays into hassium-277 through alpha decay. The remaining 85% of the time, it decays through spontaneous fission.
November 9, 1994 at 4:39 pm, the first atom with atomic number 110 was detected at the Gesellschaft fur Schwerionenforschung (GSI) in Darmstadt, in Germany.
Element 110 was produced by fusing a nickel and lead atom together. This was achieved by accelerating the nickel atoms to a high energy in the heavy ion accelerator."This rare reaction occurs only at a very specific velocity of the nickel projectile. Over a period of many days, many billion billion nickel atoms must be shot at a lead target in order to produce and identify a single atom of element 110. The atoms produced in the nickel-lead collisions are selected by a velocity filter and then captured in a detector system which measures their decay. The energy of the emitted helium nuclei serves to identify the atom" (Press Release). This element was only found to have a lifetime of less than 1/1000th of a second. It is expected that soon a heavier version of element 110 that might be more stable, and that lives slightly longer will be developed.
The name darmstatdium was confirmed by IUPAC in August 2003.
No macroscopic sample of darmstadtium has ever been prepared, so its bulk appearance is unknown. It is often predicted to be a dense metallic solid, but color, texture, melting behavior, and other ordinary physical properties have not been directly observed.
Darmstadtium has no practical use outside nuclear and chemical research. Individual atoms are made to study superheavy nuclei, alpha-decay chains, spontaneous fission, and the limits of element production. Any proposed chemical experiments must be designed for atom-at-a-time detection, because the known isotopes are too short-lived and scarce for materials use, radiotracer applications, or commercial products.
Since only a few atoms of darmstadtium have ever been produced, it currently has no uses outside of basic scientific research.
No compound of darmstadtium has been isolated in weighable quantity, and its chemistry remains mostly predictive. As a group 10 element it is expected to show metallic and coordination chemistry related in broad outline to platinum, but relativistic effects may alter trends. Calculations have considered species such as darmstadtium hexafluoride, DsF₆, and darmstadtium tetrachloride, DsCl₄; oxidation states such as +2, +4, and possibly +6 are discussed, but experimental confirmation is very limited or absent.
See more information at the Darmstadtium compound page.
All known darmstadtium isotopes are radioactive, with half-lives ranging from very short intervals to at most seconds for the better-known nuclides. The radiological hazard would come mainly from alpha decay and, for some isotopes, spontaneous fission. In practice, only a few atoms are produced, so chemical toxicity is not a practical exposure issue; accelerator targets and detectors are handled under radiological controls.
Darmstadtium has no confirmed natural occurrence and is not expected to persist in the environment because its known isotopes decay rapidly. Atoms produced in laboratories decay essentially where they are made or implanted in detector materials. There is no known environmental cycle, biological role, or ecological accumulation pathway for the element itself.
Darmstadtium has no commodity market, industrial supply chain, or recoverable stock. Production requires a heavy-ion accelerator, highly prepared target materials, and long experimental runs that may yield only a few identifiable atoms. The cost is therefore embedded in nuclear-physics research programs rather than in saleable material. Recycling is not meaningful for darmstadtium itself, although target materials and detector components may be recovered or reused after experiments.
Made by bombarding bismuth-209 with cobolt-59.
Darmstadtium is not a primordial element, and no cosmic abundance has been measured. Superheavy nuclei near this region may be formed transiently in extreme nucleosynthesis environments, but known darmstadtium isotopes would decay too quickly to accumulate. Its extraterrestrial relevance is therefore mainly theoretical, as part of studies of the limits of nuclear stability.
- Darmstadtium was named for Darmstadt, Germany, where it was first synthesized.
- It was initially reported by the GSI heavy-ion research laboratory in 1994.
- Atoms are recognized through correlated decay chains rather than by ordinary chemical analysis.
- It belongs to group 10 but has not shown platinum-like chemistry in bulk because no bulk sample exists.
- The temporary systematic name for element 110 was ununnilium.
प्रतिमा
गुणधर्म
भौतिक
- अणुत्रिज्या (अनुभवाधारित)
- 132 pm सर्व घटकांच्या अणुत्रिज्या (अनुभवाधारित) ची तुलना करा →
- घनता
- 3.48 × 104 kg/m³ सर्व घटकांच्या घनता ची तुलना करा →
रासायनिक
- इलेक्ट्रॉन आसक्ती
- 1.6 eV
- ऑक्सिडीकरण अवस्था
- 0, +2, +4, +6, +8 सर्व घटकांच्या ऑक्सिडीकरण अवस्था ची तुलना करा →
- संयुजा इलेक्ट्रॉन
- 25 सर्व घटकांच्या संयुजा इलेक्ट्रॉन ची तुलना करा →
- इलेक्ट्रॉन संरूपण
- [Rn] 7s2 5f14 6d8 (भाकीत केलेले)
उष्मागतिक
उपलब्ध नाही
केंद्रकीय
- प्रोटॉन
- 110 सर्व घटकांच्या प्रोटॉन ची तुलना करा →
- न्यूट्रॉन
- 172 सर्व घटकांच्या न्यूट्रॉन ची तुलना करा →
- ज्ञात समस्थानिके
- 18 सर्व घटकांच्या ज्ञात समस्थानिके ची तुलना करा →
- स्थिर समस्थानिके
- 0 सर्व घटकांच्या स्थिर समस्थानिके ची तुलना करा →
- वस्तुमानांक (सर्वाधिक स्थिर)
- 281
- सर्वाधिक स्थिर समस्थानिक
- Ds-282
- शोधाचे वर्ष
- 1994
विपुलता
उपलब्ध नाही
स्फटिक संरचना
उपलब्ध नाही
इलेक्ट्रॉन संरचना
- प्रत्येक कवचातील इलेक्ट्रॉन
- 8, 25 सर्व घटकांच्या प्रत्येक कवचातील इलेक्ट्रॉन ची तुलना करा →
ओळखचिन्हे
- CAS क्रमांक
- 54083-77-1 सर्व घटकांच्या CAS क्रमांक ची तुलना करा →
- InChI
- InChI=1S/Ds
- InChI की
- NCBMSFCPDGXTHD-UHFFFAOYSA-N
इलेक्ट्रॉन संरूपण भाकीत केलेले
——या आयनासाठी इलेक्ट्रॉन संरूपणाची माहिती उपलब्ध नाही.
अणुप्रतिमान
समस्थानिकांमुळे न्यूट्रॉन संख्या, वस्तुमान आणि स्थैर्य बदलते — विद्युतदृष्ट्या उदासीन अणूचे इलेक्ट्रॉन संरूपण बदलत नाही.
उपलब्ध नाही
योजनात्मक अणुप्रतिमान, प्रमाणानुसार नाही.
अणूची विशिष्ट ओळख
उत्सर्जन / शोषण वर्णपट
समस्थानिक वितरण
स्थिर समस्थानिके नाहीत.
| वस्तुमानांक | अणुवस्तुमान (u) | नैसर्गिक विपुलता | अर्धायुष्य |
|---|---|---|---|
| 278 किरणोत्सारी | २७८.१५७०४ ± ०.०००६७ | उपलब्ध नाही | 270 ms |
| 273 किरणोत्सारी | २७३.१४८५६ ± ०.०००१४ | उपलब्ध नाही | 240 us |
| 269 किरणोत्सारी | २६९.१४४७५२ ± ०.००००३४ | उपलब्ध नाही | 230 us |
| 279 किरणोत्सारी | २७९.१६०१ ± ०.०००६४ | उपलब्ध नाही | 210 ms |
| 270 किरणोत्सारी | २७०.१४४५८४ ± ०.००००५२ | उपलब्ध नाही | 205 us |
अवस्था / स्थिती
अवस्थेविषयी माहिती उपलब्ध नाही
अणुवर्णपट
94 पैकी 10 दाखवले आहेत. आयनाच्या विद्युतभारानुसार चढत्या क्रमाने मांडलेले.
ऊर्जा पातळ्यांचा संग्रह ?
| आयन | विद्युतभार | पातळ्या |
|---|---|---|
| Ds VI | +5 | 2 |
| Ds VII | +6 | 1 |
| Ds VIII | +7 | 1 |
| Ds IX | +8 | 2 |
| Ds X | +9 | 2 |
| Ds XI | +10 | 2 |
| Ds XII | +11 | 2 |
| Ds XIII | +12 | 2 |
| Ds XIV | +13 | 2 |
| Ds XV | +14 | 2 |
अवस्थेविषयी माहिती उपलब्ध नाही
संयुगे
समस्थानिके (5)
| वस्तुमानांक | अणुवस्तुमान (u) | नैसर्गिक विपुलता | अर्धायुष्य | क्षय प्रकार | |
|---|---|---|---|---|---|
| 278 किरणोत्सारी | २७८.१५७०४ ± ०.०००६७ | उपलब्ध नाही | 270 ms | α ?SF ? | |
| 273 किरणोत्सारी | २७३.१४८५६ ± ०.०००१४ | उपलब्ध नाही | 240 us | α ≈100% | |
| 269 किरणोत्सारी | २६९.१४४७५२ ± ०.००००३४ | उपलब्ध नाही | 230 us | α =100% | |
| 279 किरणोत्सारी | २७९.१६०१ ± ०.०००६४ | उपलब्ध नाही | 210 ms | SF =88±0.5%α =12±0.5% | |
| 270 किरणोत्सारी | २७०.१४४५८४ ± ०.००००५२ | उपलब्ध नाही | 205 us | α ≈100%SF ? |
विस्तारित गुणधर्म
सहसंयुजी त्रिज्या (विस्तारित)
- सहसंयुजी त्रिज्या (प्युक्को)
- 128 pm
- सहसंयुजी त्रिज्या (प्युक्को, दुहेरी बंध)
- 116 pm
- सहसंयुजी त्रिज्या (प्युक्को, तिहेरी बंध)
- 118 pm
क्रमांकन मापनपट्ट्या
- Mendeleev
- 70
ध्रुवणक्षमता आणि अपस्करण
- द्विध्रुव ध्रुवणक्षमता
- 32 a.u.
- द्विध्रुव ध्रुवणक्षमता (अनिश्चितता)
- 3 a.u.
ऑक्सिडीकरण अवस्थांचे वर्ग
प्रगत संदर्भ माहिती
समस्थानिक क्षय प्रकार (30)
| समस्थानिक | मोड | तीव्रता |
|---|---|---|
| 267 | A | 100% |
| 268 | A | — |
| 269 | A | 100% |
| 270 | A | 100% |
| 270 | SF | — |
| 271 | SF | 75% |
| 271 | A | 25% |
| 272 | SF | — |
| 273 | A | 100% |
| 274 | A | — |
अतिरिक्त माहिती
Estimated Crustal Abundance
The estimated element abundance in the earth's crust.
Not Applicable
संदर्भ (1)
- [5] Darmstadtium https://education.jlab.org/itselemental/ele110.html
Estimated Oceanic Abundance
The estimated element abundance in the earth's oceans.
Not Applicable
संदर्भ (1)
- [5] Darmstadtium https://education.jlab.org/itselemental/ele110.html
संदर्भ
(8)
Data deposited in or computed by PubChem
The half-life and atomic mass data was provided by the Atomic Mass Data Center at the International Atomic Energy Agency.
Element data are cited from the Atomic weights of the elements (an IUPAC Technical Report). The IUPAC periodic table of elements can be found at https://iupac.org/what-we-do/periodic-table-of-elements/. Additional information can be found within IUPAC publication doi:10.1515/pac-2015-0703 Copyright © 2020 International Union of Pure and Applied Chemistry.
The information are cited from Pure Appl. Chem. 2018; 90(12): 1833-2092, https://doi.org/10.1515/pac-2015-0703.
Thomas Jefferson National Accelerator Facility (Jefferson Lab) is one of 17 national laboratories funded by the U.S. Department of Energy. The lab's primary mission is to conduct basic research of the atom's nucleus using the lab's unique particle accelerator, known as the Continuous Electron Beam Accelerator Facility (CEBAF). For more information visit https://www.jlab.org/
The periodic table at the LANL (Los Alamos National Laboratory) contains basic element information together with the history, source, properties, use, handling and more. The provenance data may be found from the link under the source name.
The periodic table contains NIST's critically-evaluated data on atomic properties of the elements.
This section provides all form of data related to element Darmstadtium.