Sunday, August 12, 2007

Manganeso (elemento) www.tool-tool.com

Bewise Inc. www.tool-tool.com Reference source from the internet.

Na Galipedia, a wikipedia en galego.

Química en progreso: Este artigo de química é, polo de agora, só un bosquexo. Aporta os teus coñecementos (ou a outros artigos relacionados coa Química ou as Ciencias que precisan ser ampliados) e contribuirás a que a Galipedia mellore e medre.


O manganeso é un elemento químico de número atómico 25 e símbolo Mn. Pertence ó grupo dos metais de transición.

[editar] Características principales

O manganeso é un metal de transición branco grisáceo, semellante ao ferro. É un metal duro e moi fráxil, refractario e facilmente oxidable. O manganeso metal pode ser ferromagnético, pero só despois de sufrir un tratamento especial.

Os seus estados de oxidación más comúns son +2, +3, +4, +6 y +7, aínda que atopáronse dende +1 a +7; os compostos nos que o manganeso presenta estado de oxidación +7 son axentes oxidantes moi enérxicos. Dentro dos sistemas biolóxicos, o catión Mn+2 compite frecuentemente co Mg+2. Emprégase sobre todo aleado con ferro en aceiros e noutras aleacións.

[editar] Véxase tamén


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