Technical data for Vanadium

Overview Name Vanadium Symbol V Atomic Number 23 Atomic Weight 50.9415 Density 6.11 g/cm3 Melting Point 1910 °C Boiling Point 3407 °C Thermal properties Phase Solid Melting Point 1910 °C Boiling Point 3407 °C Absolute Melting Point 2183 K Absolute Boiling Point 3680 K Critical Pressure N/A Critical Temperature N/A Heat of Fusion 22.8 kJ/mol Heat of Vaporization 453 kJ/mol Specific Heat 489 J/(kg K)[note] Adiabatic Index N/A Neel Point N/A Thermal Conductivity 31 W/(m K) Thermal Expansion 8.4×10-6 K-1 Bulk physical properties Density 6.11 g/cm3 Density (Liquid) 5.5 g/cm3 Molar Volume 8.3374×10-6 Brinell Hardness 628 MPa Mohs Hardness 7 Vickers Hardness 628 MPa Bulk Modulus 160 GPa Shear Modulus 47 GPa Young Modulus 128 GPa Poisson Ratio 0.37 Refractive Index N/A Speed of Sound 4560 m/s Thermal Conductivity 31 W/(m K) Thermal Expansion 8.4×10-6 K-1 Reactivity Valence 5 Electronegativity 1.63 ElectronAffinity 50.6 kJ/mol Ionization Energies 650.9, 1414, 2830, 4507, 6298.7, 12363, 14530, 16730, 19860, 22240, 24670, 29730, 32446, 86450, 94170, 102300, 112700, 121600, 130700, 143400, 151440 kJ/mol Health and Safety DOT Hazard Class 4.1 DOT Numbers 3089 RTECS Number N/A NFPA Label

Classifications Alternate Names None Names of Allotropes None Block d Group 5 Period 4 Series Transition Metal Electron Configuration [Ar]4s23d3 Color Silver Discovery 1801 in Mexico and Sweden Gas phase N/A CAS Number CAS7440-62-2 CID Number CID23990 RTECS Number N/A Electrical properties Electrical Type Conductor Electrical Conductivity 5×106 S/m Resistivity 2×10-7 m Ω Superconducting Point 5.4 Magnetic properties Magnetic Type Paramagnetic Curie Point N/A Mass Magnetic Susceptibility 6.28×10-8 m3/Kg Molar Magnetic Susceptibility 3.199×10-9 m3/mol Volume Magnetic Susceptibility 0.0003837 Abundances % in Universe 0.0001% % in Sun 0.00004% % in Meteorites 0.0061% % in Earth's Crust 0.019% % in Oceans 1.5×10-7% % in Humans 3×10-6% Atomic dimensions and structure Atomic Radius 171 pm Covalent Radius 153 pm Van der Waals Radius N/A Crystal Structure Body-centered Cubic Lattice Angles π/2, π/2, π/2 Lattice Constants 303, 303, 303 pm Space Group Name Im_ 3m Space Group Number 229 Nuclear Properties Half-Life Stable Lifetime Stable Decay Mode N/A Quantum Numbers 4F3/2 Neutron Cross Section 5.06 Neutron Mass Absorption 0.0033 Known Isotopes 40V, 41V, 42V, 43V, 44V, 45V, 46V, 47V, 48V, 49V, 50V, 51V, 52V, 53V, 54V, 55V, 56V, 57V, 58V, 59V, 60V, 61V, 62V, 63V, 64V, 65V Stable Isotopes 51V Isotopic Abundances 50V 0.25% 51V 99.75%