75Solid
Re 186.207 Atomic mass · uTransition metals
Rhenium
Rhenium is a chemical element with symbol Re and atomic number 75. It is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust.
Discovery 1925 (Masataka Ogawa)
K2L8M18N32O13P2
Physical properties
Values for the element in its standard state.
- Density
- 21.02g/cm³
- Melting point
- 3,459K
- Boiling point
- 5,869K
- Atomic radius
- 159pm
- Bonding type
- Metallic
- Molar heat
- 25.48J/(mol·K)
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 10 electrons; 4s, 2 electrons; 4p, 6 electrons; 4d, 10 electrons; 5s, 2 electrons; 5p, 6 electrons; 4f, 14 electrons; 5d, 5 electrons; 6s, 2 electrons;
[Xe] represents 54 core electrons. The full view shows them explicitly.
75 electrons Orbital order preserved from source
- Electronegativity
- 1.9Pauling scale
- First ionization energy
- 760kJ/mol
- Electron affinity
- 15kJ/mol
- Van der Waals radius
- Not available
Re RheniumAtomic number 75
760kJ/mol
Atomic numberGaps indicate unavailable data
About rhenium
- Appearance
- Silvery-grayish
- Discovery
- 1925 (Masataka Ogawa)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.