Tantalum (Ta) Properties |
ATantalum (ATa)
Properties 1/ |
Nuclear (73 protons/electrons)
- Atomic Number: 73
- Atomic Mass: 180.948
- Atomic Energy: 0.270 Ergs
- Group: 5; Period: 6
- Family: Transition
Metals
- Bonding Radius: 1.34 Angstroms
- Atomic Radius: 2.09 Angstroms
- Atomic Volume: 10.90 cm3mol-1
- 33 Isotopes: 156Ta
to 188Ta
- Stable Isotopes: 180Ta,
181Ta
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Nuclear (73 Aprotons/positrons)
- Atomic Number: 73
- Atomic Mass: 180.948
- Atomic Energy: 0.270 Ergs
- Group: 5; Period: 6
- Family: Transition
Metals
- Bonding Radius: 1.34 Angstroms
- Atomic Radius: 2.09 Angstroms
- Atomic Volume: 10.90 cm3mol-1
- 33 AIsotopes: 156ATa
to 188ATa
- Stable AIsotopes: 180ATa,
181ATa
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Physical
- Rare gray metal with a high melting point
- Density: 16.6 g cm-3
- Melting Point: 2,996 oC
- Boiling Point: 5,425 oC
- Specific Heat: 0.14 J g-1 K-1
- Heat of Vaporization: 743 kJ mol-1
- Heat of Fusion: 31.6 kJ mol-1
- Electrical Conductivity: 0.0761106 cm-1 Ohm-1
- Thermal Conductivity: 0.575 W cm-1 K-1
|
Physical
- Rare gray metal with a high melting point
- Density: 16.6 g/cm-3
- Melting Point: 2,996 oC
- Boiling Point: 5,425 oC
- Specific Heat: 0.14 J g-1 K-1
- Heat of Vaporization: 743 kJ mol-1
- Heat of Fusion: 31.6 kJ mol-1
- Electrical Conductivity: 0.0761 106 cm-1 Ohm-1
- Thermal Conductivity: 0.575 W cm-1 K-1
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Chemical
- Valance Number: +5
- Electron Configuration: 2,8,18,32,11,2
- Electronegativity: 1.5
- 1st Ionization Potential: 7.9 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Chemical
- Valance Number: -5
- Positron Configuration: 2,8,18,32,11,2
- Positronpositivity: 1.5
- 1st Ionization Potential: 7.9 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Identified
by Anders Ekeberg
Sweden in 1802
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Identified by Norm Hansen in 2001
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