Periodic Table/Rhenium
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75Re186.2070 Da

Rhenium

Transition Metal·Period 6, Group 7·s-block

Silvery-white metallic transition element. Obtained as a by-product of molybdenum refinement. Rhenium-molybdenum alloys are superconducting.

Gallery

Pure Rhenium Bead, arc melted, 21 grams. Original size in cm: 1.5 x 1.7. Measured radiation dose <0.05 μS/h.

Hi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/rhenium.php

Bohr model of Rhenium

Physical Propertiesmass · density · phase · crystal

Atomic Mass

186.2070Da

Density

20.8000g/cm³

Phase (STP)

Solid

Melting Point

3458.2K

Boiling Point

5863.1K

Molar Heat

0.1370J/(mol·K)

Crystal Structure

HEX

Lattice Constant

2.760Å

Atomic Radiiatomic · covalent · van der Waals

Atomic (Empirical)

135.00pm

Covalent

131.00pm

Van der Waals

216.00pm

Electronic Propertieselectronegativity · ionization · affinity

Electron Configuration

[Xe] 4f14 5d5 6s2

Electron Shells

2, 8, 18, 32, 13, 2

Electronegativity

1.90Pauling

Electron Affinity

0.1kJ/mol

1st Ionization Energy

7.8kJ/mol

Oxidation States

-3, -1, 0, +1, +2, +3, +4, +5, +6, +7

Orbital DiagramAufbau · Hund's rule · Pauli exclusion

↑↓
1s2
↑↓
2s2
↑↓
↑↓
↑↓
2p6
↑↓
3s2
↑↓
↑↓
↑↓
3p6
↑↓
↑↓
↑↓
↑↓
↑↓
3d10
↑↓
4s2
↑↓
↑↓
↑↓
4p6
↑↓
↑↓
↑↓
↑↓
↑↓
4d10
↑↓
5s2
↑↓
↑↓
↑↓
5p6
↑↓
↑↓
↑↓
↑↓
↑↓
↑↓
↑↓
4f14
↑
↑
↑
↑
↑
5d5
↑↓
6s2

Full: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d5 6s2Short: [Xe] 4f14 5d5 6s2

Ionization Energies (75 known)

1st7.8 kJ/mol2nd16.6 kJ/mol3rd27.0 kJ/mol4th39.1 kJ/mol5th51.9 kJ/mol6th67.0 kJ/mol7th82.7 kJ/mol8th144.4 kJ/mol9th165.0 kJ/mol10th187.0 kJ/mol11th208.0 kJ/mol12th236.0 kJ/mol13th268.0 kJ/mol14th291.0 kJ/mol15th330.0 kJ/mol16th377.0 kJ/mol17th403.0 kJ/mol18th429.0 kJ/mol19th476.0 kJ/mol20th520.0 kJ/mol21th570.0 kJ/mol22th620.0 kJ/mol23th670.0 kJ/mol24th720.0 kJ/mol25th760.0 kJ/mol26th810.0 kJ/mol27th860.0 kJ/mol28th910.0 kJ/mol29th953.0 kJ/mol30th1194.0 kJ/mol31th1242.0 kJ/mol32th1294.0 kJ/mol33th1349.0 kJ/mol34th1402.0 kJ/mol35th1454.0 kJ/mol36th1530.0 kJ/mol37th1583.0 kJ/mol38th1641.0 kJ/mol39th1696.0 kJ/mol40th1912.0 kJ/mol41th1966.0 kJ/mol42th2025.0 kJ/mol43th2080.0 kJ/mol44th2240.0 kJ/mol45th2302.0 kJ/mol46th2450.0 kJ/mol47th2514.5 kJ/mol48th4214.0 kJ/mol49th4335.0 kJ/mol50th4468.0 kJ/mol51th4609.0 kJ/mol52th4745.0 kJ/mol53th4877.0 kJ/mol54th5099.0 kJ/mol55th5236.0 kJ/mol56th5388.0 kJ/mol57th5528.0 kJ/mol58th5919.0 kJ/mol59th6042.0 kJ/mol60th6176.0 kJ/mol61th6300.0 kJ/mol62th6810.0 kJ/mol63th6952.0 kJ/mol64th7230.0 kJ/mol65th7366.0 kJ/mol66th16080.0 kJ/mol67th16410.0 kJ/mol68th16780.0 kJ/mol69th17120.0 kJ/mol70th19000.0 kJ/mol71th19420.0 kJ/mol72th19950.0 kJ/mol73th20297.4 kJ/mol74th81556.6 kJ/mol75th83162.4 kJ/molSuccessive Ionization Energies

Emission Spectrumvisible range · characteristic spectral lines

489
386
424
Re emission
380nm750nm
386.4 nm(100%)488.9 nm(50%)424.0 nm(30%)

Abundanceby mass

🌍Earth's Crust
700.0 ppt
🌊Ocean
4.0 ppt
✨Universe
200.0 ppt
🧬Human Body—

Log scale · ppm = parts per million by mass

Biological Role

No biological role

No known biological role. Re-186 and Re-188 used in cancer radiotherapy.

Discovery

Discovered By

Walter Noddack, Ida Tacke, Otto Berg

Named By

—

Year

1925

Nuclear Data

Known Isotopes

41

Stable Isotopes

1

Stable Mass Numbers

185

Natural isotopic abundance (IUPAC recommended values)

Isotopes of Re41 known

NuclideZNMass (AMU)Half-lifeDecayJπAbundance
159Re7584158.984106Unknownp, α1/2+—
160Re7585159.981880611 μsp (0.89%), α (0.11%)4-—
161Re7586160.977624440 μsp (1%), α1/2+—
185Restable75110184.952958Stablestable (1%)5/2+3740.0000%
187Re75112186.95575241.6 Gyβ⁻ (1%), α (0%)5/2+6260.0000%
197Re75122196.978153Unknownβ⁻5/2+—
198Re75123197.981760Unknownβ⁻, β⁻n——
199Re75124198.984187Unknownβ⁻5/2+—

Click any isotope for its full page with decay chain:

159Re160Re161Re162Re163Re164Re165Re166Re167Re168Re169Re170Re171Re172Re173Re174Re175Re176Re177Re178Re179Re180Re181Re182Re183Re184Re185Re186Re187Re188Re189Re190Re191Re192Re193Re194Re195Re196Re197Re198Re199Re
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