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Tantalum

Tantalum is a chemical element with symbol Ta and atomic number 73. Previously known as tantalium, its name comes from Tantalus, an antihero from Greek mythology. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. It is part of the refractory metals group, which are widely used as minor components in alloys. The chemical inertness of tantalum makes it a valuable substance for laboratory equipment and a substitute for platinum. Tantalum is also used for medical implants and bone repair. Its main use today is in tantalum capacitors in electronic equipment such as mobile phones, DVD players, video game systems and computers. Tantalum, always together with the chemically similar niobium, occurs in the minerals tantalite, columbite and coltan (a mix of columbite and tantalite). Tantalum is a rare metal, comprising 6991800000000000000♠8×10⁻⁹% of the universe, making it one-fifteenth as abundant in the universe as gold (which makes up 6992600000000000000♠6×10⁻⁸%). Tantalum also comprises 6996150000000000000♠1.5×10⁻⁴% of the earth's crust, making it more abundant than other metals in the sixth period, such as rhenium (abundance 6993260000000000000♠2.6×10⁻⁷%), osmium (abundance 6993180000000000000♠1.8×10⁻⁷%), and iridium (abundance 6992400000000000000♠4×10⁻⁸%), but not as abundant as barium (abundance 6998340000000000000♠3.4×10⁻²%).

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This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Tantalum

Isotopes of tantalum

Natural tantalum (Ta) consists of two stable isotopes: ¹⁸¹Ta (99.988%) and 180mTa (0.012%).

The latter nuclide 180mTa (m denotes a metastable state) has sufficient energy to decay in three ways: isomeric transition to the ground state of 180Ta, beta decay to 180W, and electron capture to 180Hf. However, no radioactivity from any decay mode of this nuclear isomer has ever been observed. Only a lower limit on its half-life of over 10¹⁵ years has been set, by observation. The very slow decay of 180mTa is attributed to its high spin (9 units) and the low spin of lower-lying states. Gamma or beta decay would require many units of angular momentum to be removed in a single step, so that the process would be very slow.

The very unusual nature of ^180mTa is that the ground state of this isotope is less stable than the isomer. The same property is exhibited in americium-242m (^242mAm). 180Ta has a half-life of only 8 hours. 180mTa is the only naturally occurring nuclear isomer (excluding radiogenic and cosmogenic short-living nuclides). It is also the rarest primordial nuclide in the Universe observed for any element that has any stable isotopes.

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This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Isotopes_of_tantalum

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Latest News for: tantalum

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Tantalum pentachloride CAS number: 7721-01-9 Tacl5 powder

GetNews 11 Nov 2024

Tantalum pentachloride Basic information ... Tantalum (V) chloride or Tantalic Chloride Molecular weight ... Tantalum pentachloride Chemical properties ... In the gaseous state, tantalum pentachloride is a monomer and exhibits a triangular bipyramidal structure.

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). The text version of this document is not available ... Disclaimer ... (noodl. 120207470) .

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Brazilian Rare Earths Limited (ASX:BRE) High-Grade Tantalum Assays At Monte Alto Project

MENA FN 08 Oct 2024

(MENAFN - ABN Newswire) Brazilian Rare Earths Limited (ASX.BRE) is pleased to announce high-grade tantalum assays from the hard rock ultra-high grade REE-Nb-Sc-U mineralisation at the Monte Alto ... .

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New mineral, tantalum deposits discovered in Ghana – Study

Ghana Business News 24 Sep 2024

Research has revealed that a new mineral, Tantalum, has been discovered at Bewadze-Mankoadze in the Kibi-Winneba Belt of southern Ghana ... the pathfinder elements of a new tantalum deposit in the area.

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Critical Elements Receives Amended Certificate of Authorization for the Rose Lithium-Tantalum Project in Quebec

Victoria Advocate 14 Aug 2024

... ("CA") for the Rose Lithium-Tantalum project ("Rose" ....

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Critical Elements Receives Amended Certificate of Authorization for the Rose Lithium-Tantalum Project in Quebec (Critical Elements Lithium Corporation)

Public Technologies 14 Aug 2024

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Tantalum Deposits (Ministry of Mines of the Republic of India)

Public Technologies 07 Aug 2024

Tantalum Deposits ... The Central Government has notified a list of 24 minerals including Tantalum, in Part D of the First Schedule of the MMDR Act, 1957 as Critical and Strategic minerals ... Tin, Tungsten, Tantalum, Niobium ... Tantalum, Cesium.

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Marula granted permit for Blesberg openpit mining

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... Southern African Lithium and Tantalum Mining subsidiary.

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(MENAFN - GlobeNewsWire - Nasdaq) Dublin, July 11, 2024 (GLOBE NEWSWIRE) -- The "Tantalum - Global Strategic Business Report" report has been added to ResearchAndMarkets.com's offering.The global ... .

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Low-leakage tantalum capacitors for detonating explosives

Eweekly 04 Jul 2024

Called TX3, maximum dc leakage within the family follows the formula 0.005CV at 25°C, so 1.76μA for the 22μF 16V part, for example ... Shock and vibration resilience to MIL-STD-202 is 100g and 20g respectively ... .

Edit

Vishay Intertechnology Solid Tantalum Molded Chip Capacitors Deliver Enhanced Performance for Electronic Detonation Systems

Nasdaq Globe Newswire 03 Jul 2024

TANTAMOUNT™ Devices Combine a Robust Design With Low 0.005CV ...

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Vishay Intertechnology Solid Tantalum Molded Chip Capacitors Deliver Enhanced Performance for Electronic Detonation Systems (Vishay Intertechnology Inc)

Public Technologies 03 Jul 2024

VSH) today introduced a new series of Tantamount™ surface-mount solid tantalum molded chip capacitors designed specifically for electronic detonation systems ... commercial tantalum capacitors and MLCCs.

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