Europium yog a lanthanide, ib qho ntawm cov ntsiab lus tsis paub zaum sab nraum cov qauv tseem ceeb ntawm lub rooj zaum. Nrog tus lej atomic 63, nws nyob hauv qhov bar ntawm cov ntsiab lus uas nyem tus lej ntawm barium thiab hafnium.
Puas yog europium yog metalloid?
Europe yog hlau hlaunrog cov tawv tawv zoo ib yam li cov hlau lead.
Dab tsi yog lub ntsiab lus ntawm europium?
Lub cev lub cev Teb chaws Europe muaj
lub ci ntsa iab, ci ntsa iab Nws yog xim hlau grey thiab muaj qhov melting point ntawm 826 ° C (1, 520 ° F) thiab kub taw tes ntawm 1,489 ° C (2, 712 ° F). Qhov ceev yog 5.24 grams ib cubic centimeter. Europium muaj lub siab nyiam nqus cov neutrons, ua rau nws muaj txiaj ntsig zoo hauv kev tsim hluav taws xob nuclear.
europium tsim li cas?
Europium yog tsim los ntawm mixing europium oxide (Eu2O3) nrog 10 feem pua ntawm lanthanum hlau thiab cua sov cov sib tov nyob rau hauv lub tshuab nqus tsev siabThaum lub sij hawm tus txheej txheem, ib tug silvery-white metallic tshuaj uas muaj europium tso rau ntawm phab ntsa ntawm lub thawv.
europium siv qhov twg?
Kev siv thawj zaug ntawm europium yog nyob rau hauv liab phosphors hauv cov khoom siv kho qhov muag thiab cov ntxaij vab tshaus TVuas siv cov raj cathode-ray thiab hauv iav rau cov teeb fluorescent. Nws kuj yog siv rau hauv scintillators rau X-ray tomography thiab ua ib qhov chaw ntawm xiav xim nyob rau hauv lub teeb-emitting diodes (LEDs).
