Niobium (Nb) Properties |
ANiobium (ANb)
Properties 1/ |
Nuclear (41 protons/electrons)
- Atomic Number: 41
- Atomic Mass: 92.906
- Atomic Energy: 0.139 Ergs
- Group: 5; Period: 5
- Family: Transition
Metals
- Bonding Radius: 1.34 Angstroms
- Atomic Radius: 2.08 Angstroms
- Atomic Volume: 10.87 cm3mol-1
- 33 Isotopes:
81Nb to 113Nb
- Stable Isotopes: 93Nb
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Nuclear (41 Aprotons/positrons)
- Atomic Number: 41
- Atomic Mass: 92.906
- Atomic Energy: 0.139 Ergs
- Group: 5; Period: 5
- Family: Transition
Metals
- Bonding Radius: 1.34 Angstroms
- Atomic Radius: 2.08 Angstroms
- Atomic Volume: 10.87 cm3mol-1
- 33 AIsotopes: 81ANb
to 113ANb
- Stable AIsotopes: 93ANb
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Physical
- Shiny white soft metal
- Density: 8.57 g cm-3
- Melting Point: 2,468 oC
- Boiling Point: 4,927 oC
- Specific Heat: 0.26 J g-1 K-1
- Heat of Vaporization: 682 kJ mol-1
- Heat of Fusion: 26.4 kJ mol-1
- Electrical Conductivity: 0.0693 106 cm-1 Ohm-1
- Thermal Conductivity: 0.537 W cm-1 K-1
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Physical
- Shiny white soft metal
- Density: 8.57 g/cm-3
- Melting Point: 2,468 oC
- Boiling Point: 4,927 oC
- Specific Heat: 0.26 J g-1 K-1
- Heat of Vaporization: 682 kJ mol-1
- Heat of Fusion: 26.4 kJ mol-1
- Electrical Conductivity: 0.0693 106 cm-1 Ohm-1
- Thermal Conductivity: 0.537 W cm-1 K-1
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Chemical
- Valance Number: +3, +5
- Electron Configuration: 2,8,18,12,1
- Electronegativity: 1.6
- 1st Ionization Potential: 6.9 Volts
- 2nd Ionization Potential: 14.3 Volts
- 3rd Ionization Potential: 25.0 Volts
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Chemical
- Valance Number: -3, -5
- Positron Configuration: 2,8,18,12,1
- Positronpositivity: 1.6
- 1st Ionization Potential: 6.9 Volts
- 2nd Ionization Potential: 14.3 Volts
- 3rd Ionization Potential: 25.0 Volts
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Identified
by Charles Hatchet
England in 1801
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Identified by Norm Hansen in 2001
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