Lanthanides thiab actinides yog cov ntsiab lus uas tsis muaj lub orbitals. Lanthanides yog tag nrho cov hlau nrog reactivity zoo ib yam li pab pawg 2 hais. Actinides yog tag nrho cov khoom siv hluav taws xob. … Actinides feem ntau pom muaj nyob rau hauv cov ntawv thov uas lawv cov xov tooj cua tuaj yeem siv los siv lub zog xws li cov tshuab pacemakers.
Tus yam ntxwv ntawm lanthanides thiab actinides yog dab tsi?
Tag nrho cov ntsiab lus lanthanide nthuav tawm lub xeev oxidation +3. Actinides yog cov khoom siv hlau. Tag nrho cov ntawm lawv yog mos, muaj ib tug silvery xim (tab sis tarnish nyob rau hauv cov huab cua), thiab muaj kuj high density thiab plasticity. Ib txhia kuj muab riam txiav.
Lanthanides thiab actinides nyob qhov twg?
Lanthanides thiab actinides nyob feem ntau nyob rau hauv "f-block" ntawm lub sijhawm teem sijhawm. Lanthanides yog siv rau hauv cov khoom xws li hybrid tsheb, superconductors, thiab cov hlau nplaum ruaj khov. Cov actinide americium yog siv rau hauv cov pa luam yeeb.
Vim li cas lanthanides thiab actinides nyob hauv qab ntawm lub rooj zaum?
Cov lanthanides thiab actinides tau sib cais los ntawm tus so ntawm lub sij hawm lub sij hawm, feem ntau tshwm sim raws li cais kab nyob rau hauv qab. Yog vim li cas rau qhov kev tso kawm no muaj ua nrog cov khoom siv hluav taws xob ntawm cov ntsiab lus.
4f ntsiab yog dab tsi?
Lanthanides: Cov ntsiab lus uas lub xeem electron nkag mus rau ib qho ntawm 4f orbitals yog hu ua 4f-block ntsiab lossisthawj inner transition series. Cov no tseem hu ua lanthanides lossis lanthanons, vim lawv tuaj tom qab lanthanum tam sim ntawd.
