Manganese (Mn)
Manganese (Mn, element 25) is a transition metal in group 7, period 4. Atomic mass 54.938, electron configuration [Ar] 3d⁵ 4s², uses and facts.
About Manganese
Manganese is a transition metal with the symbol Mn and atomic number 25. It is a solid at room temperature, and it sits in group 7, period 4 of the periodic table. Manganese was discovered in 1774 by Johan Gottlieb Gahn.
Manganese key facts
- Atomic number: 25
- Symbol: Mn
- Atomic mass: 54.938 u
- Category: transition metal
- Group: 7
- Period: 4
- State at room temperature: solid
- Electron configuration: [Ar] 3d⁵ 4s²
- Electronegativity (Pauling): 1.55
- Melting point: 1519 K (1245.85 °C)
- Boiling point: 2334 K (2060.85 °C)
- Density: 7.21 g/cm³
- Common oxidation states: −3, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7
Electron configuration
The electron configuration of manganese is [Ar] 3d⁵ 4s². The part in brackets is the noble gas core; the rest shows how the outer electrons fill their subshells.
Uses of manganese
- Steel alloys
- Batteries
- Fertilizers
Did you know?
Cave paintings made 17,000 years ago used manganese dioxide as black pigment.
Other elements in group 7 and neighbours
Frequently asked questions
What is the atomic number of manganese?
The atomic number of manganese is 25, which means every manganese atom has 25 protons.
What is the electron configuration of manganese?
The electron configuration of manganese is [Ar] 3d⁵ 4s².
What group and period is manganese in?
Manganese is a transition metal in group 7, period 4.
What state is manganese at room temperature?
Manganese is a solid at room temperature.
What is manganese used for?
Manganese is used for steel alloys, batteries, fertilizers.