25 Mn Manganese 54,938 u

Manganese

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Période
4
Groupe
7
Bloc
d-bloc
Phase (STP)
Solid

Manganese is a hard, brittle transition metal essential for steel production. It is also important in biological systems as a cofactor for many enzymes.

Apparence: Silvery metallic

Propriétés physiques

Masse atomique 54.938 u
Densité 7.21 g/cm³
Point de fusion 1245.8 °C
Point d'ébullition 2060.8 °C
Phase à STP Solid
Rayon atomique 161.0 pm

Propriétés électroniques

Électronégativité 1.55
Énergie d'ionisation 717.3 eV
Électrons de valence 7

Configuration électronique

Configuration [Ar] 3d⁵ 4s²

Electron Shell Configuration

Manganese electron shell configuration Mn 2e⁻ 8e⁻ 13e⁻ 2e⁻

Position in Periodic Table

Manganese position in the periodic table Mn

Découverte

Découvert par: Johan Gottlieb Gahn
Année: 1774

Compounds Containing Manganese

Plus de Métal de Transition

Frequently Asked Questions

What is Manganese?
Manganese (Mn) is a chemical element with atomic number 25. It is a solid at standard temperature and pressure, classified as a métal de transition.
What are the key properties of Manganese?
Manganese has an atomic mass of 54.938 u, density of 7.21 g/cm³, melting point of 1245.8°C, boiling point of 2060.8°C.
What is the electron configuration of Manganese?
The electron configuration of Manganese is [Ar] 3d5 4s2. It is in the d-block of the periodic table.
Who discovered Manganese?
Manganese was discovered by Johan Gottlieb Gahn in 1774.
What is the electronegativity of Manganese?
Manganese has an electronegativity of 1.55 on the Pauling scale.