Molybdenum yog cov khoom siv tshuaj nrog lub cim Mo thiab tus lej atomic 42. Lub npe yog los ntawm Neo-Latin molybdaenum, uas yog raws li Ancient Greek Μόλυβδος molybdos, lub ntsiab lus txhuas, vim nws cov ores tsis meej pem nrog cov hlau lead.
Yuav nrhiav tau molybdenum li cas?
Molybdenum tau tshawb pom los ntawm Carl Welhelm Scheele, Swedish chemist, hauv 1778 hauv cov ntxhia hu ua molybdenite (MoS 2) uas tau tsis meej pem raws li ib tug lead compound. Molybdenum raug cais tawm los ntawm Peter Jacob Hjelm hauv xyoo 1781. … Molybdenum kuj tau txais los ua cov khoom lag luam mining thiab ua cov tungsten thiab tooj liab.
Leej twg nrhiav tau molybdenum 42?
Qhov no yog 2,000 degrees siab tshaj qhov melting point ntawm hlau, thiab 1,000 degrees siab tshaj qhov melting kub ntawm feem ntau pob zeb. Molybdenum tau tshawb pom los ntawm Carl Wilhelm Scheele hauv xyoo 1778, thiab raug cais thiab muab npe los ntawm Peter Jacob Hjelm hauv xyoo 1781.
Molybdenum tau txais nws lub npe nyob qhov twg?
Raws li Scheele qhov kev xav, Peter Jacob Hjelm, lwm tus kws tshuaj Swedish, tau ua tiav cov hlau (1782) thiab muab nws lub npe molybdenum, los ntawm Greek molybdos, "lead." Lub sij hawm lub sij hawm yog ua los ntawm 118 yam.
Puas molybdenum puas tsim kev puas tsuaj rau tib neeg?
Molybdenum toxicity tsis tshua muaj thiab kev tshawb fawb hauv tib neeg muaj tsawg. Txawm li cas los xij, hauv cov tsiaj, qib siab heev tau txuas rau kev txo qis kev loj hlob, lub raum tsis ua haujlwm, muaj menyuam tsis taus thiab raws plab (19). Muaj qee zaus,cov tshuaj molybdenum tau ua rau muaj kev phiv loj heev rau tib neeg, txawm tias cov koob tshuaj tau zoo nyob hauv UL.
