24 Cr Chromium 51,996 u

Chromium

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Période
4
Groupe
6
Bloc
d-bloc
Phase (STP)
Solid

Chromium is a hard, lustrous transition metal prized for its mirror finish. It is essential in stainless steel production and chrome plating.

Apparence: Silvery metallic

Propriétés physiques

Masse atomique 51.996 u
Densité 7.15 g/cm³
Point de fusion 1906.8 °C
Point d'ébullition 2670.8 °C
Phase à STP Solid
Rayon atomique 166.0 pm

Propriétés électroniques

Électronégativité 1.66
Énergie d'ionisation 652.9 eV
Affinité électronique 64.3 eV
Électrons de valence 6

Configuration électronique

Configuration [Ar] 3d⁵ 4s¹

Electron Shell Configuration

Chromium electron shell configuration Cr 2e⁻ 8e⁻ 13e⁻ 1e⁻

Position in Periodic Table

Chromium position in the periodic table Cr

Découverte

Découvert par: Louis Nicolas Vauquelin
Année: 1797

Compounds Containing Chromium

Plus de Métal de Transition

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Frequently Asked Questions

What is Chromium?
Chromium (Cr) is a chemical element with atomic number 24. It is a solid at standard temperature and pressure, classified as a métal de transition.
What are the key properties of Chromium?
Chromium has an atomic mass of 51.996 u, density of 7.15 g/cm³, melting point of 1906.8°C, boiling point of 2670.8°C.
What is the electron configuration of Chromium?
The electron configuration of Chromium is [Ar] 3d5 4s1. It is in the d-block of the periodic table.
Who discovered Chromium?
Chromium was discovered by Louis Nicolas Vauquelin in 1797.
What is the electronegativity of Chromium?
Chromium has an electronegativity of 1.66 on the Pauling scale.