25 Mn Manganese 54.938 u

Manganese

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Period
4
Group
7
Block
d-block
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.

Appearance: Silvery metallic

Physical Properties

Atomic Mass 54.938 u
Density 7.21 g/cm³
Melting Point 1245.8 °C
Boiling Point 2060.8 °C
Phase at STP Solid
Atomic Radius 161.0 pm

Electronic Properties

Electronegativity 1.55
Ionization Energy 717.3 eV
Valence Electrons 7

Electron Configuration

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

Discovery

Discovered by: Johan Gottlieb Gahn
Year: 1774

Compounds Containing Manganese

More Transition Metal

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 transition metal.
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.