Discovered By: Otto Berg, Walter Noddack, lda Noddack
Discovery year: 1925

The following table showing some properties of Rhenium(Re):

Table Example
Atomic number 75
Group 7
Period 6
Block d
Electrons 75
Protons 75
Neutrons 111
Atomic weight 186.207
Oxidation states -1, +2, +4, +6, +7
Ionic charge Re^7+


Table Example
Electrons per shell K2 L8 M18 N32 O13 P2
Electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^14 5d^5
Atomic radius 188 pm
Covalent radius 151 pm
Boiling point 5596°C
Melting point 3186°C
Phase Solid
Fusion heat 33 kJ.mol^-1
Vaporization heat 705 kJ.mol^-1
Thermal expansion 6.2*10^-6 K^-1


Table Example
Color Gray
Brinell hardness 1320 MPa
Bulk modulus 370 GPa
Density 21020 kg.m^-3
Liquid density 18900 kg.m^-3
Mohs hardness 7
Poisson ratio 0.3
Shear modulus 178 GPa
Sound speed 4700 m.s^-1
Vickers hardness 2450 MPa


Table Example
Young's modulus 463 GPa
Electrical conductivity 5.6*10^6 S.m^-1
Electrical type Conductor
Magnetic type Paramagnetic
Resistivity 1.8*10^-7 Ohm.m
Superconducting point 1.7 K
Electronegativity 1.9
Valence 7
Electron affinity 14.5 kJ.mol^-1
First ionization energy 760 kJ.mol^-1
Radioactive No
Neutron cross section 90 barn