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.
Leej twg invented curium?
Curium yog thawj zaug tsim los ntawm pab pawg ntawm Glenn Seaborg, Ralph James, thiab Albert Ghiorso xyoo 1944, siv lub cyclotron ntawm Berkeley, California. Lawv tau foob pob ib qho ntawm cov khoom tshiab pom plutonium (isotope 239) nrog alpha-particles.
keeb kwm ntawm cerium yog dab tsi?
Cerium li oxide (ceria) tau pom nyob rau xyoo 1803 los ntawm Swedish chemists Jöns Jacob Berzelius thiab Wilhelm Hisinger, ua haujlwm ua ke, thiab ywj siab los ntawm German chemist Martin Klaproth. Nws muaj npe tom qab lub hnub qub Ceres, uas tau pom nyob rau xyoo 1801. Cerium tshwm sim hauv bastnasite, monazite, thiab ntau lwm yam minerals.
Cerium muab tau li cas?
Hnub no, cerium feem ntau tau txais dhau los ntawm kev sib pauv ion ntawm monazite xuab zeb ((Ce, La, Th, Nd, Y)PO 4), cov khoom muaj nplua nuj nyob hauv lub ntiaj teb tsawg. Cerium tau muab lub npe rau lub hnub qub Ceres, uas tau pom nyob rau xyoo 1801. Lub caij tau pom ob xyoos tom qab xyoo 1803 los ntawm Klaproth thiab los ntawm Berzelius thiab Hisinger.
cerium nyob qhov twg ntawm lub rooj zaum?
Cerium yog thib ob ntawm lanthanide series. Nyob rau hauv lub sij hawm lub sij hawm, nws tshwm nyob nruab nrab ntawm lub lanthanides lanthanum rau nws sab laug thiab praseodymium rau nws sab xis, thiab saum toj no lub actinide thorium.
