75
Re
186.21
Rhenium
Element 75 · 186.21 u · d-block
transition metal
One of the rarest elements in Earth's crust. Used in jet engine superalloys and platinum-rhenium catalysts.
Phase (STP)
Solid
Melting Point
3186 °C
Boiling Point
5596 °C
Density
21.02 g/cm³
Electronegativity
1.9
Atomic Radius
135 pm
Ionization Energy
760 kJ/mol
Electron Affinity
14 kJ/mol
Discovered
1925 · Masataka Ogawa
Electron Configuration
[Xe] 4f14 5d5 6s2
Electron Orbitals
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