ReZ =  75

From the Latin "Rhenus", meaning "Rhine"
(AM) Atomic Mass 186.207  amu    Oxidation States +6, +7, -1
   (BP) Boiling Point 5627  °C    (MP) Melting Point 3180  °C
   (ρ) Density 21.04  g/cm3    Crystal Structure Hexagonal
   ( χ ) Electronegativity 1.9    (AR) Atomic Radius 1.59  Å
   Physical State Solid (C) Heat Capacity 0.137  J/g °C
Electronic-Config [Xe]  4f14  5d5  6s2     (I1) First Ionization E 760.3  kJ/mol
   (ΔHvap) Heat of Vaporization 704  kJ/mol     (ΔHfus) Heat of Fusion 60.43  kJ/mol
   Year of Discovery 1925    Location of Discovery Germany
(E°) Standard Potential Re3+⇔ Re (0.300 V)
Stable isotopes  185Re
Discovered/Synthesized by Ida Tacke-Noddack, Walter Noddack, Otto Carl Berg
Natural Source The mineral/ore molybdenite
Common Uses Rocket engines, heater coils, laboratory filaments, electric contacts, thermocouples, catalyst
Other Info Has the highest boiling point of any element
one of the rarest elements in the Earth’s crust
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