27 Co Cobalt 58,933 u

Cobalt

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Periode
4
Gruppe
9
Block
d-Block
Phase (STP)
Solid

Cobalt is a hard, lustrous transition metal used in superalloys and blue pigments. It is a key component of lithium-ion batteries and vitamin B12.

Erscheinungsbild: Hard, lustrous, bluish-gray

Physikalische Eigenschaften

Atommasse 58.933 u
Dichte 8.9 g/cm³
Schmelzpunkt 1494.8 °C
Siedepunkt 2926.8 °C
Phase bei STP Solid
Atomradius 152.0 pm

Elektronische Eigenschaften

Elektronegativität 1.88
Ionisierungsenergie 760.4 eV
Elektronenaffinität 63.7 eV
Valenzelektronen 9

Elektronenkonfiguration

Konfiguration [Ar] 3d⁷ 4s²

Electron Shell Configuration

Cobalt electron shell configuration Co 2e⁻ 8e⁻ 15e⁻ 2e⁻

Position in Periodic Table

Cobalt position in the periodic table Co

Entdeckung

Entdeckt von: Georg Brandt
Jahr: 1735

Compounds Containing Cobalt

Mehr Übergangsmetall

Frequently Asked Questions

What is Cobalt?
Cobalt (Co) is a chemical element with atomic number 27. It is a solid at standard temperature and pressure, classified as a übergangsmetall.
What are the key properties of Cobalt?
Cobalt has an atomic mass of 58.933 u, density of 8.9 g/cm³, melting point of 1494.8°C, boiling point of 2926.8°C.
What is the electron configuration of Cobalt?
The electron configuration of Cobalt is [Ar] 3d7 4s2. It is in the d-block of the periodic table.
Who discovered Cobalt?
Cobalt was discovered by Georg Brandt in 1735.
What is the electronegativity of Cobalt?
Cobalt has an electronegativity of 1.88 on the Pauling scale.