POTATO - Periodic Table Tool

POTATO - Periodic Table Tool

Properties of Niobium

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Property Unit Value
Name - Niobium
Abbrevation - Nb
Atomic Number - 41
Group - TM
Heat of Fusion Kcal/g-mole 6.39
Heat of Vaporization Kcal/g-mole 163.56
Molecular Weight g/g-mole 92.90638
Melting Point �C 2471.85
Boiling Point �C 4799
Refractive Index - 1.8
Critical Temperature �C 18726.9
Critical Pressure atm N/A
Critical Volume cm�/g-mol N/A
Atomic Volume cm�/g-mol 10.83
Atomic Radii (Bragg-Slater) pm N/A
Atomic Radii (Covalent) pm N/A
Atomic Radii (Van der Walls) pm 145
Density g/cm� 8.57000
Oxidation State - 5,2,3,4
Electron Configuration - [Kr]4d4 5s
Electron Affinity (Theory) KJ/g-mol N/A
Electron Affinity (Exp) KJ/g-mol N/A
Electronegativity (Pauling) - 1.60
Electronegativity (Sanderson) - 1.12
Electronegativity (Allred_Rochow) - 1.23
Surface Tension @BP dyn/cm 2020.0
NMR Frequencies of Nuclei MHz 24.442
Discovery Date - 1801
Electric Resistivity mohm-cm 12.5
Linear Thermal Expansion Coefficient 1E-6 cm/cm/�C 7.06
Neutron Capture Cross Section barns 1.15
Thermal Conductivity W/m/K 53.7
Magnetic Susceptibility 1e-9 m�/kg 27.6
Abundance, (Sun) log(atoms/1E12 atoms H) 1.9
Abundance, (Meteorite) log(atoms/atoms) 1.5
Abundance, (Earth) log(pbbw) 2.8
Abundance, (Crust) log(pbbw) 4
Abundance, (Ocean) log(1E-12 mol/kg) 1
Abundance, (Body) log(ppmw) 0
Electrical Conductivity %IACS 13.2
Electrical Resistance - 15.22
Photoelectric Work Function eV 4.01
Hall's Coefficient 1E-12* volt-cm/amp-Oe N/A
Electrochemical Equivalent mg/coulomb 0.1926
Young's Modulus of Elasticity 1E-6 kg/cm� 1.07
Shear Modulus 1E-6 kg/cm� 0.382
Bulk Modulus 1E-6 kg/cm� 1.736
Poisson's Ratio - 0.35
Hardness - 54
Hardness Unit - VICKERS(ANNEALED)

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