Definition of tantalum in English:

tantalum

noun ˈtantələmˈtæn(t)ləm

mass noun

The chemical element of atomic number 73, a hard silver-grey metal of the transition series.
（化学元素）钽（符号： Ta ）
Tantalum is rare in nature and usually occurs in association with niobium, which it resembles. Tantalum alloys have some specialized uses, and the metal was formerly used for electric light filaments
Example sentencesExamples
- Magnesium, titanium, zirconium, niobium, tantalum, molybdenum and tungsten may be soldered if they are plated with a solderable metal coating such as silver.
- With the cell phone industry booming, the park's resources and wildlife are under massive strain from miners seeking colombo-tantalite, also known as coltan or tantalum.
- Many rare but technologically important elements, such as tantalum and uranium, continue to be mined from poor regions of the world under conditions that some consider pernicious and hazardous.
- A second element, tantalum, is always present in these minerals along with niobium.
- The initial spark was a press release from the Tantalum-Niobium International Study Centre calling for a boycott of tantalum mined illegally in world heritage sites in the Congo.

Derivatives

tantalic

adjective tanˈtalɪktænˈtælɪk

Many contemporary chemists believed niobium and tantalum were the same elements until 1844 and later 1866 when researchers showed that niobic and tantalic acids were different compounds.
Example sentencesExamples
- Tantalum is etched by peroxide - the same way it etches tungsten or titanium - by forming its mineral acid, in this case tantalic acid.
- The freshly precipitated tantalic acid was soluble in a hot oxalic acid aqueous solution, and it was quite stable against hydrolysis.
- The catalyst has a support of niobic acid, tantalic acid or a mixture of niobic acid and tantalic acid or a support containing such acids.
- The experimental results have shown proposed constructive solutions to accomplish electron-ion powder heating with following particles deformation at a tantalic target.

Origin

Early 19th century: from Tantalus, with reference to its frustrating insolubility in acids.

Definition of tantalum in US English:

tantalum

nounˈtan(t)ləmˈtæn(t)ləm

The chemical element of atomic number 73, a hard silver-gray metal of the transition series.
（化学元素）钽（符号： Ta ）
Tantalum is rare in nature and usually occurs in association with niobium, which it resembles. Tantalum alloys have some specialized uses, and the metal was formerly used for electric light filaments
Example sentencesExamples
- A second element, tantalum, is always present in these minerals along with niobium.
- Magnesium, titanium, zirconium, niobium, tantalum, molybdenum and tungsten may be soldered if they are plated with a solderable metal coating such as silver.
- Many rare but technologically important elements, such as tantalum and uranium, continue to be mined from poor regions of the world under conditions that some consider pernicious and hazardous.
- The initial spark was a press release from the Tantalum-Niobium International Study Centre calling for a boycott of tantalum mined illegally in world heritage sites in the Congo.
- With the cell phone industry booming, the park's resources and wildlife are under massive strain from miners seeking colombo-tantalite, also known as coltan or tantalum.

Origin

Early 19th century: from Tantalus, with reference to its frustrating insolubility in acids.

词汇	tantalum
释义	Definition of tantalum in English: tantalum noun ˈtantələmˈtæn(t)ləm mass noun The chemical element of atomic number 73, a hard silver-grey metal of the transition series. （化学元素）钽（符号： Ta ） Tantalum is rare in nature and usually occurs in association with niobium, which it resembles. Tantalum alloys have some specialized uses, and the metal was formerly used for electric light filaments Example sentencesExamples Magnesium, titanium, zirconium, niobium, tantalum, molybdenum and tungsten may be soldered if they are plated with a solderable metal coating such as silver. With the cell phone industry booming, the park's resources and wildlife are under massive strain from miners seeking colombo-tantalite, also known as coltan or tantalum. Many rare but technologically important elements, such as tantalum and uranium, continue to be mined from poor regions of the world under conditions that some consider pernicious and hazardous. A second element, tantalum, is always present in these minerals along with niobium. The initial spark was a press release from the Tantalum-Niobium International Study Centre calling for a boycott of tantalum mined illegally in world heritage sites in the Congo. Derivatives tantalic adjective tanˈtalɪktænˈtælɪk Many contemporary chemists believed niobium and tantalum were the same elements until 1844 and later 1866 when researchers showed that niobic and tantalic acids were different compounds. Example sentencesExamples Tantalum is etched by peroxide - the same way it etches tungsten or titanium - by forming its mineral acid, in this case tantalic acid. The freshly precipitated tantalic acid was soluble in a hot oxalic acid aqueous solution, and it was quite stable against hydrolysis. The catalyst has a support of niobic acid, tantalic acid or a mixture of niobic acid and tantalic acid or a support containing such acids. The experimental results have shown proposed constructive solutions to accomplish electron-ion powder heating with following particles deformation at a tantalic target. Origin Early 19th century: from Tantalus, with reference to its frustrating insolubility in acids. Definition of tantalum in US English: tantalum nounˈtan(t)ləmˈtæn(t)ləm The chemical element of atomic number 73, a hard silver-gray metal of the transition series. （化学元素）钽（符号： Ta ） Tantalum is rare in nature and usually occurs in association with niobium, which it resembles. Tantalum alloys have some specialized uses, and the metal was formerly used for electric light filaments Example sentencesExamples A second element, tantalum, is always present in these minerals along with niobium. Magnesium, titanium, zirconium, niobium, tantalum, molybdenum and tungsten may be soldered if they are plated with a solderable metal coating such as silver. Many rare but technologically important elements, such as tantalum and uranium, continue to be mined from poor regions of the world under conditions that some consider pernicious and hazardous. The initial spark was a press release from the Tantalum-Niobium International Study Centre calling for a boycott of tantalum mined illegally in world heritage sites in the Congo. With the cell phone industry booming, the park's resources and wildlife are under massive strain from miners seeking colombo-tantalite, also known as coltan or tantalum. Origin Early 19th century: from Tantalus, with reference to its frustrating insolubility in acids.
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