Tantalum Ta
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Electron 1
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Electron 8
Electron 1
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Electron 4
Electron 5
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Electron 8
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Electron 12
Electron 13
Electron 14
Electron 15
Electron 16
Electron 17
Electron 18
Electron 1
Electron 2
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Electron 11
Electron 12
Electron 13
Electron 14
Electron 15
Electron 16
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Electron 18
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Electron 21
Electron 22
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Electron 24
Electron 25
Electron 26
Electron 27
Electron 28
Electron 29
Electron 30
Electron 31
Electron 32
Electron 1
Electron 2
Electron 3
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Electron 1
Electron 2
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.
73
Atomic Number
180.95 u
Atomic Mass
3269.15 K
Melting Point
5731 K
Boiling Point
16.69 g/cm³
Density
2.1 Å
Atomic Radius
1.7 Å
Covalent Radius
1.5
Electronegativity
7.55 eV
First Ionization Energy
31
Electron Affinity
6
Number of Shells
2, 8, 18, 32, 11, 2
Electron Shell Occupations
0.14 J/g
Specific Heat