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| rdfs:comment | - Molybdenum (from the Greek word meaning "lead-like"), chemical symbol Mo, is a gray, metallic transition metal. It has an atomic number of 42, and belongs to group 6 on the periodic table. Molybdenum is found in trace amounts in some plants and animals. Molybdenum has the sixth-highest melting point of any element, and for this reason is commonly used by the UNSC in high-strength alloys. One example is prior to Operation: FIRST STRIKE, when the Spartan-IIs of Blue Team used carbon-molybdenum I-beams to reinforce the hull of a captured Spirit dropship.
- Molybdenum (pronounced /məˈlɪbdənəm/, from the Greek word for the metal "lead"), is a Group 6 chemical element with the symbol Mo and atomic number 42. It has the sixth-highest melting point of any element, and for this reason it is often used in high-strength steel alloys. Molybdenum is found in trace amounts in plants and animals, although excess molybdenum can be toxic in some animals. Molybdenum was discovered in 1778 by Carl Wilhelm Scheele and first isolated in 1781 by Peter Jacob Hjelm.
- Molybdenum has an atomic number of 42.
- Molybdenum is an essential nutrient for animals and humans. Rich sources of molybdenum include legumes, cereal products, and leafy vegetables.
- Molybdenum was a precious metallic chemical element. It had a melting point of 2622 degrees centigrade. The Sense Sphere was rich in molybdenum. In the 28th century, two separate Earth expeditions discovered this and wanted to mine the planet for it. The Sensorites held the second expedition prisoner to protect their world from being exploited. (TV: The Sensorites)
- Molybdenum was an element, number 42 on the periodic table. Data, a Soong-type android, was constructed with 11.8 kilograms of a molybdenum-cobalt alloy. (TNG: "The Most Toys" )
- Molybdenum (pronounced /ˌmɒlɪbˈdiːnəm/ or /məˈlɪbdənəm/ , from Neo-Latin Molybdaenum, from Ancient Greek Μόλυβδος molybdos, meaning lead), is a Group 6 chemical element with the symbol Mo and atomic number 42. The free element, which is a silvery metal, has the sixth-highest melting point of any element. It readily forms hard, stable carbides, and for this reason it is often used in high-strength steel alloys. Molybdenum does not occur as the free metal in nature, but rather in various oxidation states in minerals. Industrially, molybdenum compounds are used in high pressure and high temperature applications, as pigments and catalysts.
- Most molybdenum compounds have low solubility in water, but the molybdate ion MoO42− is soluble and will form if molybdenum-containing minerals are in contact with oxygen and water. Recent theories suggest that the release of oxygen by early life was important in removing molybdenum from minerals into a soluble form in the early oceans, where it was used as a catalyst by single-celled organisms. This sequence may have been important in the history of life, because molybdenum-containing enzymes then became the most important catalysts used by some bacteria to break into atoms the atmospheric molecular nitrogen, allowing biological nitrogen fixation. This, in turn allowed biologically driven nitrogen-fertilization of the oceans, and thus the development of more complex organisms.
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| Row 1 info | - Carl Wilhelm Scheele
- molybdenum
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| abstract | - Molybdenum (from the Greek word meaning "lead-like"), chemical symbol Mo, is a gray, metallic transition metal. It has an atomic number of 42, and belongs to group 6 on the periodic table. Molybdenum is found in trace amounts in some plants and animals. Molybdenum has the sixth-highest melting point of any element, and for this reason is commonly used by the UNSC in high-strength alloys. One example is prior to Operation: FIRST STRIKE, when the Spartan-IIs of Blue Team used carbon-molybdenum I-beams to reinforce the hull of a captured Spirit dropship.
- Molybdenum (pronounced /məˈlɪbdənəm/, from the Greek word for the metal "lead"), is a Group 6 chemical element with the symbol Mo and atomic number 42. It has the sixth-highest melting point of any element, and for this reason it is often used in high-strength steel alloys. Molybdenum is found in trace amounts in plants and animals, although excess molybdenum can be toxic in some animals. Molybdenum was discovered in 1778 by Carl Wilhelm Scheele and first isolated in 1781 by Peter Jacob Hjelm.
- Molybdenum has an atomic number of 42.
- Molybdenum is an essential nutrient for animals and humans. Rich sources of molybdenum include legumes, cereal products, and leafy vegetables.
- Molybdenum was a precious metallic chemical element. It had a melting point of 2622 degrees centigrade. The Sense Sphere was rich in molybdenum. In the 28th century, two separate Earth expeditions discovered this and wanted to mine the planet for it. The Sensorites held the second expedition prisoner to protect their world from being exploited. (TV: The Sensorites)
- Molybdenum (pronounced /ˌmɒlɪbˈdiːnəm/ or /məˈlɪbdənəm/ , from Neo-Latin Molybdaenum, from Ancient Greek Μόλυβδος molybdos, meaning lead), is a Group 6 chemical element with the symbol Mo and atomic number 42. The free element, which is a silvery metal, has the sixth-highest melting point of any element. It readily forms hard, stable carbides, and for this reason it is often used in high-strength steel alloys. Molybdenum does not occur as the free metal in nature, but rather in various oxidation states in minerals. Industrially, molybdenum compounds are used in high pressure and high temperature applications, as pigments and catalysts. Molybdenum minerals have long been known, but the element was "discovered" (in the sense of differentiating it as a new entity from minerals salts of other metals) in 1778 by Carl Wilhelm Scheele. The metal was first isolated in 1781 by Peter Jacob Hjelm. Most molybdenum compounds have low solubility in water, but the molybdate ion MoO42− is soluble and will form if molybdenum-containing minerals are in contact with oxygen and water. Recent theories suggest that the release of oxygen by early life was important in removing molybdenum from minerals into a soluble form in the early oceans, where it was used as a catalyst by single-celled organisms. This sequence may have been important in the history of life, because molybdenum-containing enzymes then became the most important catalysts used by some bacteria to break into atoms the atmospheric molecular nitrogen, allowing biological nitrogen fixation. This, in turn allowed biologically driven nitrogen-fertilization of the oceans, and thus the development of more complex organisms. At least 50 molybdenum-containing enzymes are now known in bacteria and animals, though only the bacterial and cyanobacterial enzymes are involved in nitrogen fixation. Due to the diverse functions of the remainder of the enzymes, molybdenum is a required element for life in higher organisms (eukaryotes), though not in all bacteria.
- Molybdenum was an element, number 42 on the periodic table. Data, a Soong-type android, was constructed with 11.8 kilograms of a molybdenum-cobalt alloy. (TNG: "The Most Toys" )
- Most molybdenum compounds have low solubility in water, but the molybdate ion MoO42− is soluble and will form if molybdenum-containing minerals are in contact with oxygen and water. Recent theories suggest that the release of oxygen by early life was important in removing molybdenum from minerals into a soluble form in the early oceans, where it was used as a catalyst by single-celled organisms. This sequence may have been important in the history of life, because molybdenum-containing enzymes then became the most important catalysts used by some bacteria to break into atoms the atmospheric molecular nitrogen, allowing biological nitrogen fixation. This, in turn allowed biologically driven nitrogen-fertilization of the oceans, and thus the development of more complex organisms. At least 50 molybdenum-containing enzymes are now known in bacteria and animals, though only the bacterial and cyanobacterial enzymes are involved in nitrogen fixation. Due to the diverse functions of the remainder of the enzymes, molybdenum is a required element for life in higher organisms (eukaryotes), though not in all bacteria.
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