Video: Puas yog samarium ntuj lossis hluavtaws?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Samarium yog qhov thib tsib feem ntau ntawm cov ntsiab lus tsis tshua muaj thiab yuav luag plaub zaug ntau dua li cov tin. Nws yeej tsis pom muaj dawb hauv cov xwm txheej, tab sis muaj nyob hauv ntau cov zaub mov, suav nrog monazite, bastnasite thiab samarskite.
Tsis tas li ntawd, puas yog txiv neej samarium tsim?
Samarium yeej tsis pom dawb nyob rau hauv qhov. Nws tshwm sim hauv cov zaub mov nrog lwm yam tsawg ntiaj teb. Qhov chaw ntawm lub caij muaj xws li cov minerals monazite thiab bastnasite. Electrolysis tuaj yeem siv los ua kom huv samarium hlau los ntawm nws cov molten chloride nrog sodium chloride.
Tsis tas li ntawd, cov ntsiab lus dab tsi yog samarium pom hauv? Lub xwb compound ntawm samarium nrog rau txhua daim ntawv thov kev lag luam yog samarium oxide (Sm 2 O 3). Qhov no compound yog siv rau hauv kev tsim cov iav tshwj xeeb, ua ib qho catalyst hauv kev tsim cov ethanol (ethyl cawv), thiab nyob rau hauv nuclear fais fab nroj tsuag raws li ib tug neutron absorber.
Ib yam li ntawd, samarium ua li cas?
Ntshiab samarium tuaj yeem yog ua los ntawm electrolyzing molten chloride nrog sodium chloride. Tsis tas li ntawd, nws tuaj yeem ua lag luam rov qab los ntawm bastnaesite thiab monazite xuab zeb nrog kev pab ntawm ion txauv thiab cov txheej txheem hnyav extraction.
Dab tsi yog tshwj xeeb txog lub npe ntawm samarium?
Samarium yog ib qho tshuaj lom neeg nrog lub cim Sm thiab atomic tooj 62. Nws yog ib qho nyuaj me ntsis silvery hlau uas maj mam oxidizes hauv huab cua. Ua ib tus tswv cuab ntawm lanthanide series, samarium feem ntau xav tias lub xeev oxidation +3.
Pom zoo:
Puas yog beryllium yog hlau lossis nonmetal lossis metalloid?
Beryllium yog hlau. Nws yog nyob rau hauv alkaline ntiaj teb hlau pawg nyob rau hauv lub periodic lub rooj thiab muaj tshuaj thiab lub cev muaj zog zoo ib yam li cov magnesium thiab txhuas, tab sis muaj ib tug ntau dua melting point tshaj ob qho tib si
Cov tshuaj tua kab puas yog txhua yam tshuaj hluavtaws?
Tsis tas li ntawd xwb, tab sis muaj ntau cov pov thawj tias cov tshuaj tua kab uas tau tso cai rau hauv kev ua liaj ua teb organic tsuas yog muaj tshuaj lom raws li tshuaj tua kab. Cov tshuaj hluavtaws muaj tshuaj lom ntau dua li cov tshuaj lom neeg. 2. Organic zus zaub mov zoo dua rau koj vim nws yog txhua yam ntuj tsim
Puas yog carbon hlau lossis nonmetal lossis metalloid?
Carbon muaj 4 electrons nyob rau hauv nws lub valence plhaub uas ua rau nws ib tug metalloid tab sis feem ntau nws yog suav hais tias yog tsis yog hlau
Puas yog malleable hlau lossis nonmetal lossis metalloid?
Hlau, Metalloids, thiab Nonmetals. Cov ntsiab lus tuaj yeem faib ua hlau, nonmetals, lossis metalloids. Cov hlau yog cov khoom siv hluav taws xob zoo ntawm cov cua sov thiab hluav taws xob, thiab tuaj yeem ua tau zoo (lawv tuaj yeem muab hammered rau hauv cov ntawv) thiab ductile (lawv tuaj yeem kos rau hauv cov hlau). Cov metalloids yog nruab nrab hauv lawv cov khoom
Lub ntuj puas xiav vim dej hiav txwv los yog dej hiav txwv xiav vim lub ntuj?
'Lub hiav txwv zoo li xiav vim liab, txiv kab ntxwv thiab daj (ntev wavelength teeb) yog absorbed ntau zog los ntawm dej tshaj yog xiav (luv wavelength light). Yog li thaum lub teeb dawb ntawm lub hnub nkag mus rau hauv dej hiav txwv, nws feem ntau yog xiav uas tau rov qab los. Ib yam li ntawd, lub ntuj xiav.'