/ˌmɒlɪbˈdiːnəm/ MOL-ib-DEE-nəm or /məˈlɪbdɨnəm/ mə-LIB-di-nəm), is a Group 6 chemical element with the symbol Mo and atomic number 42. The name is from Neo-Latin Molybdaenum, from Ancient Greek Μόλυβδος molybdos, meaning lead, itself proposed as a loanword from Anatolian Luvian and Lydian languages,[4] since its ores were confused with lead ores.[5] 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 a free metal on Earth, but rather in various oxidation states in minerals. Industrially, molybdenum compounds are used in high-pressure and high-temperature applications, as pigments and catalysts.
2012年4月12日星期四
What is molybdenum?
Molybdenum ( /ˌmɒlɪbˈdiːnəm/ MOL-ib-DEE-nəm or /məˈlɪbdɨnəm/ mə-LIB-di-nəm), is a Group 6 chemical element with the symbol Mo and atomic number 42. The name is from Neo-Latin Molybdaenum, from Ancient Greek Μόλυβδος molybdos, meaning lead, itself proposed as a loanword from Anatolian Luvian and Lydian languages,[4] since its ores were confused with lead ores.[5] 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 a free metal on Earth, but rather in various oxidation states in minerals. Industrially, molybdenum compounds are used in high-pressure and high-temperature applications, as pigments and catalysts.
/ˌmɒlɪbˈdiːnəm/ MOL-ib-DEE-nəm or /məˈlɪbdɨnəm/ mə-LIB-di-nəm), is a Group 6 chemical element with the symbol Mo and atomic number 42. The name is from Neo-Latin Molybdaenum, from Ancient Greek Μόλυβδος molybdos, meaning lead, itself proposed as a loanword from Anatolian Luvian and Lydian languages,[4] since its ores were confused with lead ores.[5] 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 a free metal on Earth, but rather in various oxidation states in minerals. Industrially, molybdenum compounds are used in high-pressure and high-temperature applications, as pigments and catalysts.
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