Element 25
Manganese
Transition metals
Manganese (Mn) is in the d-block of the periodic table — group 7, period 4.
Manganese is a chemical element with symbol Mn and atomic number 25.
Key data
- Atomic number
- 25
- Atomic mass
- 54.938 u
- Group / Period
- 7 / 4
- Block
- d-block
- Phase at STP
- Solid
- Density
- 7.21 g/cm³
- Melting point
- 1245.8 °C
- Boiling point
- 2060.8 °C
- Electron configuration
- [Ar] 3d5 4s2
Periodic table block
Manganese is in the d-block (group 7, period 4). Elements land in the d-block when their highest-energy electrons fill a d subshell — these are the transition metals in the middle of the table.
New to this? Periodic table blocks explained: s, p, d, and f
Common uses
- •Steel toughening
- •Dry-cell batteries
- •Glass decoloring
Discovery
Year: 1774
Discovered by: Torbern Olof Bergman
Frequently asked questions
What is the atomic number of Manganese?
Manganese has atomic number 25. Its symbol is Mn and its atomic mass is 54.938 u.
What category of element is Manganese?
Manganese is classified as transition metals. It sits in group 7, period 4 of the periodic table.
What block of the periodic table is Manganese in?
Manganese is in the d-block (group 7, period 4). Its highest-energy electrons occupy the d subshell — you can see this in its electron configuration, [Ar] 3d5 4s2.
What is Manganese used for?
Common uses of Manganese include: Steel toughening, Dry-cell batteries, Glass decoloring.
When was Manganese discovered?
Manganese was discovered in 1774 by Torbern Olof Bergman.
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