Ruthenium, symbolized by Ru and with atomic number 44, is an intriguing chemical element that falls under the transition metals in the periodic table. Its atomic weight is 101.072 u, and it appears as a solid with a dazzling silvery white metallic hue at room temperature.

When it comes to the electron configuration of gaseous neutral ruthenium in its ground state, it is denoted as [Kr].4d75s1, with a term symbol of 5F5. The shell structure of ruthenium follows a pattern of, signifying the number of electrons in each shell from the first to the fifth.

Key Takeaways:

  • The electron configuration of ruthenium is [Kr].4d75s1.
  • Ruthenium belongs to the transition metals and is part of group 8 in the periodic table.
  • It has an atomic weight of 101.072 u and a silvery white metallic appearance.
  • The shell structure of ruthenium is
  • Ruthenium is a solid at room temperature.

Atomic Structure of Ruthenium

Ruthenium, with the symbol Ru and atomic number 44, possesses a unique atomic structure that contributes to its chemical properties. Understanding the atomic structure of ruthenium is essential in comprehending its behavior and interactions with other elements.

The electron configuration of ruthenium is 1s2 2s2p6 3s2p6d10 4s2p6d7 5s1. This arrangement of electrons illustrates how they are distributed within the atomic orbitals. In the case of ruthenium, the 4d orbitals are particularly significant, with a filling order of 4d7. This means that ruthenium has seven electrons occupying the 4d orbital, which influences its reactivity and chemical bonding.

Ruthenium has a hexagonal crystal structure and an atomic radius of 1.89Å. Its atomic volume is 8.3cm3/mol, while the covalent radius measures 1.25Å. These dimensions provide insights into the size and arrangement of ruthenium atoms in a solid state, impacting its physical properties and behavior in various environments.

Table: Atomic Structure of Ruthenium

Atomic Property Value
Atomic Symbol Ru
Atomic Number 44
Electron Configuration 1s2 2s2p6 3s2p6d10 4s2p6d7 5s1
Filling Orbital 4d7
Crystal Structure Hexagonal
Atomic Radius 1.89Å

The electron configuration and atomic structure of ruthenium play a crucial role in its chemical behavior and properties. By understanding these fundamental aspects, scientists can explore its applications in various industries, including electronics, catalysis, and materials science.

Physical Properties of Ruthenium

Ruthenium, symbolized as Ru, possesses several remarkable physical properties. With a density of 12.37g/cc at 300K, it showcases a solid and compact structure. Operating at extreme temperatures, ruthenium has a boiling point of 4173K (3900°C) and a melting point of 2523K (2250°C).

This rare and resilient metal has a unique resistance to the elements. It remains unaffected by air, water, and acids, displaying exceptional stability. Nevertheless, it can be dissolved by molten alkalis, making it versatile in certain chemical reactions.

Considered a good conductor of both electricity and heat, ruthenium boasts an electrical conductivity of 0.137 106/cm Ω and a thermal conductivity of 1.17 W/cmK. Its specific heat of 0.238J/gK further exemplifies its ability to retain and transfer thermal energy efficiently.

Ruthenium exhibits various oxidation states, including +2, +3, +4, +6, and +8 charges. Furthermore, it possesses a valence electron potential of 64 eV, highlighting its distinct electronic properties.


What is the atomic number of ruthenium?

The atomic number of ruthenium is 44.

What is the atomic weight of ruthenium?

The atomic weight of ruthenium is 101.072 u.

What is the electron configuration of ruthenium in its ground state?

The electron configuration of ground state gaseous neutral ruthenium is [Kr].4d75s1.

How many electrons does ruthenium have in its outermost shell?

Ruthenium has 1 electron in its fifth shell.

What is the crystal structure of ruthenium?

Ruthenium has a hexagonal crystal structure.

Is ruthenium affected by air, water, and acids?

Ruthenium is unaffected by air, water, and acids, but can be dissolved by molten alkalis.

What is the density of ruthenium at 300K?

The density of ruthenium is 12.37g/cc at 300K.

What are the melting and boiling points of ruthenium?

The melting point of ruthenium is 2523K (2250°C), and the boiling point is 4173K (3900°C).

What are the electrical and thermal conductivities of ruthenium?

Ruthenium has an electrical conductivity of 0.137 106/cm Ω and a thermal conductivity of 1.17 W/cmK.

What are the possible oxidation states of ruthenium?

Ruthenium can exhibit +2, +3, +4, +6, and +8 oxidation states.

What is the valence electron potential of ruthenium?

The valence electron potential of ruthenium is 64 eV.

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