Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版:英文原文完整保留,中文紧随对应单元;术语采用 v20260916 确认表,自动语义审校结果可追溯。

Tantalum

钽
Symbol
符号
Ta
塔
Atomic number
原子序数
73
Atomic mass
原子质量
180.947
Thermal conductivity
热导率
0.55
Atomic radius
原子半径
2.09
Covalent radius
共价半径
1.34
Density
密度
16.6
Atomic volume
原子体积
10.9
Melting point
熔点
3270
Oxidation states
氧化态
5
Boiling point
沸点
5731
Stable isotopes
稳定同位素
1
Heat of vapor.
汽化热
743
Electronegativity
电负性
1.5
Heat of fusion
熔化热
31.6
First ionization
第一电离能
7.89
Specific heat
比热容
0.14
Electrical conduct.
电导率
...
Electron configuration
电子排布

General description
一般说明
Nuclear data
核数据
Index

Periodic Table

Chemistry concepts
索引 元素周期表 化学概念
 
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Tantalum

钽

Tantalum and Niobium commonly occur together in the iron -containing minerals columbite (FeNb2O6) and tantalite (FeTa2O6). Tantalum with niobium, manganese and iron form the oxides manganocolumbite and manganotantalite. Tantalum is found with calcium, solium and fluorine in the oxide mineral microlite. Tantalum is found with uranium, yttrium, cerium and titanium in the complex oxide mineral euxenite. Tantalum is found with niobium and aluminum in the oxide mineral simpsonite. Tantalum is found with niobium, manganese and iron in the oxide mineral tapiolite. An oxide of antimony and tantalum is stibiotantalite.

钽和铌常共同存在于含铁的矿物 columbite(FeNb₂O₆)和 tantalite(FeTa₂O₆)中。钽与铌、锰和铁形成氧化物 manganocolumbite 和 manganotantalite。钽与钙、溶ium 和氟形成氧化物矿物 microlite。钽与铀、钇、铈和钛在复杂的氧化物矿物 euxenite 中共存。钽与铌和铝在氧化物矿物 simpsonite 中共存。钽与铌、锰和铁在氧化物矿物 tapiolite 中共存。锑和钽的氧化物是 stibiotantalite。

Tantalum carbide, TaC, is a very hard substance which is used for making high-speed cutting tools.

碳化钽(TaC)是一种非常坚硬的物质,用于制造高速切削工具。
Atomic data
原子数据
Nuclear data
核数据
Index

Periodic Table

Chemistry concepts

Reference
Pauling
索引 元素周期表 化学概念 参考 Pauling
 
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Tantalum Nuclear Data

钽的核数据
Z
A
Atomic
Mass (u)
原子质量(u)
Nuclear
Mass(GeV/c2
核质量(GeV/c²)
Binding
Energy(MeV)
结合能(MeV)
Spin
自旋
Natural
Abund.
天然丰度
Half-life
半衰期
Decay
衰变
Q
MeV
Q值(MeV)
73
179
178.945930
166.6511
1438.0
7/2
...
1.82y
EC
电子俘获(EC)
0.11
73
180
179.947462
167.5840
1444.7
1
...
18.15h
EC,b-
0.87,0.71
73
181
180.947993
168.5160
1452.3
7/2
0.99998
stable
稳定
...
...
73
182
181.950148
169.4496
1458.3
3
...
115d
b-
1.81
Atomic data
原子数据
Index

Periodic Table

Chemistry concepts

Reference
Rohlf
索引 元素周期表 化学概念 参考 Rohlf
 
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