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Rhenium (Re) – Element 75 of the periodic table

Rhenium (symbol Re) is element number 75 of the periodic table and belongs to the “Transition metal” category. Its atomic mass is about 186.21, and its phase under standard conditions is Solid. This element sits in period 6 and group 7 of the periodic table, and its electrons are arranged in shells of 2, 8, 18, 32, 13, 2. The short electron configuration of Rhenium is [Xe] 4f¹⁴ 5d⁵ 6s². Known uses of Rhenium include Jet engines, Thermocouples and Catalyst.

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Properties of Rhenium

Atomic number
75
Chemical symbol
Re
Atomic mass
186.21
Category
Transition metal
Period
6
Group
7
Phase
Solid
Protons
75
Electrons
75
Neutrons (approx.)
111
Electron shells
2, 8, 18, 32, 13, 2
Outer-shell electrons
2
Discovered
Walter Noddack (1925)

Electron configuration of Rhenium

The electron configuration of Rhenium (Re), with 75 electrons, is shown below. The last shell (shell 6) is highlighted:

Full configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d⁵ 6s²
Short configuration
[Xe] 4f¹⁴ 5d⁵ 6s²
Last shell
6s²

What is electron configuration and how is it written?

Electron shells of Rhenium

Distribution of 75 electrons of Rhenium across shells K to P:

  1. K2
  2. L8
  3. M18
  4. N32
  5. O13
  6. P2

What is a transition metal?

The transition metals are the d-block elements: usually good conductors of heat and electricity, with several oxidation states, and they form colourful compounds and important catalysts.

Uses of Rhenium

Frequently asked questions about Rhenium

What is the atomic number of Rhenium?

The atomic number of Rhenium (Re) is 75; that is, every atom of it has 75 protons.

What is the electron configuration of Rhenium?

The electron configuration of Rhenium (Re) is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d⁵ 6s²; in short form it is [Xe] 4f¹⁴ 5d⁵ 6s², and its last shell is 6s².

What is the chemical symbol of Rhenium?

The chemical symbol of Rhenium is Re.

Where is Rhenium located in the periodic table?

Rhenium is located in period 6 and group 7 and belongs to the “Transition metal” category.

What is the atomic mass of Rhenium?

The atomic mass of Rhenium is about 186.21 (atomic mass units).

What is the phase of Rhenium under normal conditions?

The phase of Rhenium under standard conditions is Solid.

What are the uses of Rhenium?

Uses of Rhenium include Jet engines, Thermocouples and Catalyst.

Who discovered Rhenium?

Rhenium was discovered by Walter Noddack in 1925.

Elements in the same category as Rhenium (Transition metal)

Molybdenum (Mo)Technetium (Tc)Ruthenium (Ru)Rhodium (Rh)Palladium (Pd)Silver (Ag)Cadmium (Cd)Hafnium (Hf)Tantalum (Ta)Tungsten (W)Osmium (Os)Iridium (Ir)Platinum (Pt)Gold (Au)Mercury (Hg)Rutherfordium (Rf)Dubnium (Db)Seaborgium (Sg)Bohrium (Bh)Hassium (Hs)

See all Transition metals

Rhenium’s group 7 neighbours

Manganese (Mn)Technetium (Tc)Bohrium (Bh)

Group 7 of the periodic table