Is manganese a metal?

Yes. Manganese is a metal, classified as a transition metal on the periodic table.

How many protons does manganese have?

Manganese has 25 protons. Its atomic number is 25, which is also the number of electrons in a neutral atom of manganese.

What group and period is manganese in?

Manganese is in group 7 and period 4 of the periodic table, in the d-block.

What is the atomic mass of manganese?

The atomic mass of manganese is 54.938 u (unified atomic mass units).

Element 25

Manganese (Mn)

Transition metal · Period 4 · Group 7 · d-block

Manganese (Mn) is element 25 of the periodic table, a transition metal in period 4, group 7 (d-block) with an atomic mass of 54.938 and is a solid at standard conditions.

At a glance

Atomic number: 25
Symbol: Mn
Atomic mass: 54.938 u
Category: Transition metals
Period: 4
Group: 7
Block: d-block
Phase at STP: solid

Electron structure

Electron configuration: 1s2 2s2 2p6 3s2 3p6 3d5 4s2
Shorthand configuration: [Ar] 3d5 4s2
Electrons per shell: 2, 8, 13, 2
Oxidation states: -3, -2, -1, +1, +2, +3, +4, +5, +6, +7

Physical properties

Melting point: 1,519 K (1,245.85 °C)
Boiling point: 2,334 K (2,060.85 °C)
Density: 7.44 g/cm³
Phase: solid

Atomic properties

Electronegativity (Pauling): 1.55
Atomic radius: 161 pm
Covalent radius: 139 pm
First ionization energy: 717 kJ/mol
Electron affinity: 0 kJ/mol

Notable isotopes

Notable isotopes of Manganese: mass number, atomic mass, natural abundance, and stability.
Isotope	Mass	Abundance	Stability
Mn-55	54.93804	100%	Stable

Common uses

Steel production
Batteries
Fertilizers
Glass coloring

Discovery

Year: 1774
Discovered by: Johan Gottlieb Gahn
Country: Sweden

Frequently asked questions

Is manganese a metal?: Yes. Manganese is a metal, classified as a transition metal on the periodic table.
How many protons does manganese have?: Manganese has 25 protons. Its atomic number is 25, which is also the number of electrons in a neutral atom of manganese.
What group and period is manganese in?: Manganese is in group 7 and period 4 of the periodic table, in the d-block.
What is the atomic mass of manganese?: The atomic mass of manganese is 54.938 u (unified atomic mass units).

Keep exploring

Manganese's row is on the printable element property sheet, and its tile is on the periodic table wall chart - the same numbers as above, laid out for A4 or A3 paper.