Name: manganese
Symbol: Mn
Atomic number: 25
Atomic weight: 54.938049 (9)
Group in periodic table: 7
Group name:
Period in periodic table: 4
Block in periodic table: d-block
CAS registry ID: 7439-96-5
The metal is gray-white, resembling iron, but is harder and very brittle. The metal is reactive chemically, and decomposes cold water slowly. Manganese is widely distributed throughout the animal kingdom. It is an important trace element and may be essential for utilisation of vitamin B. Manganese is present in quantity the floor of oceans. It is an important component of steel.