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Potassium permanganate Reference Libraries

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Manganite Manganese oxide
2005-05-26 09:07:13

Manganese is a chemical element in the periodic table that has the symbol Mn and atomic number 25. Notable characteristics Manganese is a gray-white metal, resembling iron. It is a hard metal and is very brittle, fusible with difficulty, but easily oxidized. Manganese metal is ferromagnetic only after special treatment. The most common oxidation states of manganese are +2, +3, +4, +6...

Pyrolusite
2005-05-25 18:56:05

Pyrolusite is a mineral consisting essentially of manganese dioxide (Mn02) and is important as an ore of manganese. It is a soft, black, amorphous mineral, often with a granular, fibrous or columnar structure, sometimes forming reniform crusts. It has a metallic luster, a black or bluish-black streak, and readily soils the fingers. The specific gravity is about 4.8. Pyrolusite and...

Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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