Cerium yog cov khoom siv tshuaj nrog lub cim Ce thiab atomic naj npawb 58. Cerium yog cov mos mos, ductile, thiab silvery-white hlau uas tarnishes thaum raug huab cua, thiab nws yog mos txaus los txiav nrog steel chav ua noj. riam.
Thaum twg thiab ua li cas thiaj nrhiav tau cerium?
Cerium tau tshawb pom hauv 1803 los ntawm Jacob Berzelius thiab Wilhelm von Hisinger hauv Sweden, thiab nws tus kheej hauv tib lub xyoo los ntawm Martin Klaproth hauv Tebchaws Yelemees. Berzelius thiab Hisinger tau tshawb pom cov khoom tshiab hauv cov pob zeb tsis tshua muaj xim liab-xim av tam sim no hu ua cerite, cerium-lanthanide silicate.
cerium feem ntau pom nyob qhov twg?
Cerium yog ib qho ntawm ntau tshaj plaws ntawm cov hlau tsis tshua muaj ntiaj teb. Nws muaj nyob rau hauv ntau yam minerals, xws li allanite los yog orthrite, monazite, bastnasite, cerite thiab samarskite. Cov deposits loj ntawm cerium tau pom nyob rau hauv India, Brazil thiab nyob rau yav qab teb California.
Cerium element nrhiav tau li cas?
Swedish chemists Jöns Jacob Berzelius thiab Wilhelm Hisinger thiab German chemist Martin Heinrich Klaproth nrhiav pom cerium nyob rau hauv 1803. … Berzelius thiab Hisinger nrhiav pom tias cerium yog ib yam khoom thaum lawv khiav hluav taws xob los ntawm cov ntsev sib tov.
Thaum twg pom lithium?
Discovered nyob rau hauv 1817 los ntawm Swedish chemist Johan August Arfwedson, lithium yog ib qho ntawm peb lub ntsiab lus synthesized thaum lub Big Bang nrog rau hydrogen thiab helium. Lo lus los ntawm Greek lo lus, nws lub npe txhais tau tias pob zeb.
