Mn
Manganese · element 25
Transition Metal · Solid at room temperature
Manganese is a chemical element with symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in combination with iron, and in many minerals. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.
Key facts
Atomic mass
54.9380443 u
how heavy one atom is
Phase (room temp.)
Solid
Density
7.21 g/cm³
how tightly packed it is
Melting point
1519 K (1246 °C)
when solid turns to liquid
Boiling point
2334 K (2061 °C)
when liquid turns to gas
Period
4
its row in the periodic table
Group
7
its column in the periodic table
Block
D-block
the neighbourhood it lives in
Electronegativity
1.55
how strongly it pulls electrons
Electron configuration
[Ar] 3d5 4s2
where its electrons live
Shells
2 · 8 · 13 · 2
electrons in each layer, inside to out
Discovered by
Torbern Olof Bergman
who found it
Appearance
silvery metallic
what it looks like
Source: Wikipedia