Manganese Element in Periodic Table | Atomic Number Atomic Mass
Manganese is a chemical element and it is a member of group 7 and period 4 in the periodic table. The atomic number of manganese is 25 and it is indicated by symbol is Mn. Manganese is found in minerals in combination with iron and it is not found as a free element in nature. Mn has 18 radioisotopes. 52Mn, 53Mn, 54Mn, 55Mn are the most stable isotopes. Mn is hard and very brittle, difficult to fuse, but easy to oxidize.
Uses of Manganese Element:
- Mn is too brittle to be of much use as a pure metal. It is used in alloys, such as steel.
- Manganese steel is used for railway tracks, prison bars and rifle barrels.
- Manganese sulphate is used to make a fungicide.
- Mn is also used to make fertilisers and ceramics
- Manganese(II) oxide is used in quantitative analysis
Manganese Element Information:
Discovery year: 1774
Discovered by: Carl Wilhelm Scheele
Atomic number: 25
Relative atomic mass: 54.938
Electron configuration: [Ar] 3d5 4s2
Other elements in the same block:
Scandium, Titanium, Vanadium, Chromium, Iron, Cobalt, Nickel, Copper, Zinc, Yttrium, Zirconium, Niobium, Molybdenum, Technetium, Ruthenium, Rhodium, Palladium, Silver, Cadmium, Lanthanum, Hafnium, Tantalum, Tungsten, Rhenium, Osmium, Iridium, Platinum, Gold, Mercury, Actinium, Rutherfordium, Dubnium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium and Copernicium are the elements in the same block.
Period: period 4
Other elements in the same period:
Group: group 7
Other elements in the same group:
Other elements in the same orbital:
Key isotopes: 55Mn
Melting point: 1246°C, 2275°F, 1519 K
Boiling point: 2061°C, 3742°F, 2334 K
Element category:transition metal
Density (g cm−3): 7.3
CAS number: 7439-96-5
Color: silvery metallic
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