molybdenum
Sign in to saveMolybdenum is a chemical element; it has symbol Mo and atomic number 42. The name is derived from Ancient Greek '''', meaning lead, since its ores were sometimes confused with those of lead. Molybdenum minerals have been known throughout history, but the element was discovered (in the sense of differentiating it as a new entity from the mineral salts of other metals) in 1778 by Carl Wilhelm Scheele. The metal was first isolated in 1781 by Peter Jacob Hjelm.
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Molybdenum is a chemical element (symbol Mo, atomic number 42) whose name comes from an Ancient Greek word for lead, because its ores were historically confused with lead ores. Although molybdenum minerals have been known for centuries, the element itself wasn't identified as a distinct entity until 1778 by Carl Wilhelm Scheele, and wasn't isolated as a metal until 1781 by Peter Jacob Hjelm.
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Research
25,427 papers- Molybdenum: More than an essential element.Journal of experimental botany · 2022
- Molybdenum.Journal of toxicology. Clinical toxicology · 1999
- Function of Molybdenum Insertases.Molecules (Basel, Switzerland) · 2022
- Molybdenum Carbide-Based Photocatalysts: Synthesis, Functionalization, and Applications.Langmuir : the ACS journal of surfaces and colloids · 2022
- Molybdenum.Advances in nutrition (Bethesda, Md.) · 2018
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Article
28 sectionsContents
- Characteristics
- Physical properties
- Chemical properties
- Isotopes
- Redox buffer in the irradiated fuel matrix
- Compounds
- History
- Occurrence and production
- Mining
- Molybdenum traces in seawater
- Applications
- Alloys
- Pure element applications
- Compound applications
- Biological role
- Mo-containing enzymes
- Human metabolism and deficiency
- Excretion
- Excess and copper antagonism
- Mammography
- Dietary recommendations
- Labeling
- Food sources
- Precautions
- See also
- References
- Bibliography
- External links
Molybdenum is a chemical element; it has symbol Mo and atomic number 42. The name is derived from Ancient Greek '', meaning lead, since its ores were sometimes confused with those of lead. Molybdenum minerals have been known throughout history, but the element was discovered (in the sense of differentiating it as a new entity from the mineral salts of other metals) in 1778 by Carl Wilhelm Scheele. The metal was first isolated in 1781 by Peter Jacob Hjelm.
Molybdenum does not occur naturally as a free metal on Earth; in its minerals, it is found only in oxidized states. The free element, a silvery metal with a grey cast, has the sixth-highest melting point of any element. It readily forms hard, stable carbides in alloys, and for this reason most of the world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys.