Search results
Results from the WOW.Com Content Network
Tantalum is a chemical element; it has symbol Ta and atomic number 73. It is named after Tantalus, a figure in Greek mythology. [11] Tantalum is a very hard, ductile ...
Radioactive isotopes that have been suggested for salted bombs include gold-198, tantalum-182, zinc-65, and cobalt-60. [1] Sodium-23, the only stable isotope, has also been proposed as a casing for a salted bomb. Neutron flux would activate it to 24 Na, which would produce intense gamma-ray emissions for several days after the detonation.
There are 2 parts per million of tantalum in the Earth's crust, making it the 51st most abundant element there. Soil contains on average 1 to 2 parts per billion of tantalum, and seawater contains 2 parts per trillion of tantalum. A typical human contains 2.9 parts per billion of tantalum. Tantalum is found in the minerals tantalite and ...
Tantalum alkylidene complexes arise by treating trialkyltantalum dichloride with alkyl lithium reagents. This reaction initially forms a thermally unstable tetraalkyl-monochloro-tantalum complex, which undergoes α-hydrogen elimination, followed by alkylation of the remaining chloride.
In August 2010, Noventa's first shipment (since reopening) of 8 tonnes of tantalum to an Asian client left the country from Quelimane. [8] Early 2012, Cyclone Funso caused some damage to the mine's buildings, along with minor floodings. The cyclone also brought a plague of non-endemic, poisonous rove beetles that affected 30% of the mine's ...
Tantalum pentoxide, also known as tantalum(V) oxide, is the inorganic compound with the formula Ta 2 O 5. It is a white solid that is insoluble in all solvents but is attacked by strong bases and hydrofluoric acid. Ta 2 O 5 is an inert material with a high refractive index and low absorption (i.e. colourless), which makes it useful for coatings ...
For premium support please call: 800-290-4726 more ways to reach us
A piece of columbite–tantalite, size 6.0 × 2.5 × 2.1 cm. Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted.