Manganese

Statistics:

• Name: Manganese
• Symbol: Mn
• Classification: Transition Metal
• Atomic Number: 25
• Atomic Mass: 54.938045 g/mol
• Density: 7.44 g/cm³
• Melting: 1244°C
• Boiling: 2097°C
• Protons & Electrons:25
• Neutrons:30
• Discovered: 1774
• Discovered By: Gahn
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Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 13
• Level 4: 2

Isotopes:

Isotope: Half-life

• ⁵²Mn: 5.591 days
• ^52m1Mn: 21.1 minutes
• ⁵³Mn: 3.74e+6 years
• ⁵⁴Mn: 312.3 days
• ⁵⁵Mn: stable
• ⁵⁶Mn: 2.5785 hours
• ⁵⁷Mn: 85.4 seconds

Brief Summary

Manganese is a Transition Metal with the symbol 'Mn' and contains 25 Protons & Electrons with 30 neutrons in the nucleus of the atom. Manganese has an atomic mass of 54.938045 g/mol and, at a temperature of 20°C, has a density of 7.44 g/cm³. It will melt at a temperature of 1244°C and boil at 2097°C.

Manganese was discovered by Gahn in 1774 and is named 'Manganese' Latin word "mangnes" meaning "magnet".

Some common usages for Manganese: steel, batteries and ceramics.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Manganese :: Mn :: 25 - Chemical Element. 10 Mar. 2010 <http://www.chemicalelement.com/element/manganese.html>.