75 Re Rhenium 186.21 u

Rhenium

Period
6
Group
7
Block
d-block
Phase (STP)
Solid

Rhenium is one of the rarest elements in Earth's crust. It is used in jet engine superalloys and as a catalyst in petroleum refining.

About Rhenium

Rhenium (Re) is one of the rarest elements in Earth's crust and among the densest, a heat-resistant transition metal in group 7 of period 6, the d-block. It has an atomic mass of 186.21, the electron configuration [Xe] 4f¹⁴ 5d⁵ 6s², and a Pauling electronegativity of 1.9. Its very high melting point suits it to the nickel-based superalloys of jet-engine turbine blades, where small additions markedly improve high-temperature strength. Rhenium also serves as a catalyst in petroleum refining, notably for producing high-octane gasoline. Solid at standard conditions, it can adopt a wide range of oxidation states.

Physical Properties

Atomic Mass 186.21 u
Phase at STP Solid

Electronic Properties

Electronegativity 1.9

Electron Configuration

Configuration [Xe] 4f¹⁴ 5d⁵ 6s²

Electron Shell Configuration

Rhenium electron shell configuration Re 2e⁻ 8e⁻ 18e⁻ 32e⁻ 13e⁻ 2e⁻
Electron shell structure of Rhenium — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 13
6 (P) 2

Position in Periodic Table

Rhenium position in the periodic table Re

Block & Period

Block

s p d f

Period

1 2 3 4 5 6 7

Periodic Table

Lanthanides Actinides

More Transition Metal

21 Sc Scandium 22 Ti Titanium 23 V Vanadium 24 Cr Chromium 25 Mn Manganese 26 Fe Iron 27 Co Cobalt 28 Ni Nickel 29 Cu Copper 30 Zn Zinc

Frequently Asked Questions

What is Rhenium?
Rhenium (Re) is a chemical element with atomic number 75. It is a solid at standard temperature and pressure, classified as a transition metal.
What are the key properties of Rhenium?
Rhenium has an atomic mass of 186.21 u.
What is the electron configuration of Rhenium?
The electron configuration of Rhenium is [Xe] 4f14 5d5 6s2. It is in the d-block of the periodic table.
What is the electronegativity of Rhenium?
Rhenium has an electronegativity of 1.9 on the Pauling scale.