44 Ru Ruthenium 101.07 u

Ruthenium

Period
5
Group
8
Block
d-block
Phase (STP)
Solid

Ruthenium is a rare platinum group metal used in electronics and as a catalyst. It hardens platinum and palladium alloys.

About Ruthenium

A rare member of the platinum group, ruthenium (Ru) is element 44, located in group 8 of period 5 in the d-block. It has an atomic mass of 101.07 and the electron configuration [Kr] 4d⁷ 5s¹, with a Pauling electronegativity of 2.2. Ruthenium is used in electronics, where thin films serve as durable electrical contacts, and in chemistry as a versatile catalyst. As an alloying agent it markedly hardens platinum and palladium, improving their wear resistance for demanding applications. The metal is solid at standard conditions and, like its platinum-group neighbors, resists corrosion and attack by most acids.

Physical Properties

Atomic Mass 101.07 u
Phase at STP Solid

Electronic Properties

Electronegativity 2.2

Electron Configuration

Configuration [Kr] 4d⁷ 5s¹

Electron Shell Configuration

Ruthenium electron shell configuration Ru 2e⁻ 8e⁻ 18e⁻ 15e⁻ 1e⁻
Electron shell structure of Ruthenium — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 15
5 (O) 1

Position in Periodic Table

Ruthenium position in the periodic table Ru

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 Ruthenium?
Ruthenium (Ru) is a chemical element with atomic number 44. It is a solid at standard temperature and pressure, classified as a transition metal.
What are the key properties of Ruthenium?
Ruthenium has an atomic mass of 101.07 u.
What is the electron configuration of Ruthenium?
The electron configuration of Ruthenium is [Kr] 4d7 5s1. It is in the d-block of the periodic table.
What is the electronegativity of Ruthenium?
Ruthenium has an electronegativity of 2.2 on the Pauling scale.