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Re - Rhenium - periodic table of the elements

An extremely dense transition metal, discovered in 1925 by Noddack, Tacke and Berg in Germany.
Atomic number - 75 Density g/mL 21
Atomic weight u 186 .207 Melting point K 3453
Bonding radius A 1 .28 Boiling point K 5869
Atomic radius A 1 .97 Heat of vaporization kJ/mol 715
Ionization Potential V 7 .88 Heat of fusion kJ/mol 33 .2
Electronegativity - 1 .9 Specific heat J/gK 0 .13
The oxide is mildly acidic.
Crystal are hexagonal.

Electron configuration: [Xe] 4f14 5d5 6s2

Other elements of the periodic table

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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLa * HfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAc ** RfDbSgBhHsMt110111112113
Lanthanides* CePrNdPmSmEuGdTbDyHoErTmYbLu
Actinides ** ThPaUNpPuAmCmBkCfEsFmMdNoLr