Niobium, tseem hu ua columbium, yog cov khoom siv tshuaj nrog lub cim Nb thiab tus lej atomic 41. Niobium yog lub teeb grey, crystalline, thiab ductile hloov hlau. Ntshiab niobium muaj Mohs hardness ntsuam xyuas zoo ib yam li cov ntshiab titanium, thiab nws muaj zoo ductility rau hlau.
Atomic loj yog dab tsi?
Lub atomic mass ntawm ib lub caij yog qhov nruab nrab ntawm cov atoms ntawm ib lub ntsiab ntsuas hauvatomic mass unit (amu, tseem hu ua d altons, D). Lub atomic huab hwm coj yog qhov hnyav nruab nrab ntawm tag nrho cov isotopes ntawm lub caij ntawd, nyob rau hauv uas qhov loj ntawm txhua isotope yog sib npaug los ntawm kev nplua nuj ntawm cov isotope.
Lub ntsiab lus twg muaj tus lej atomic ntawm 41?
Niobium yog cov khoom siv tshuaj muaj cim Nb thiab tus lej atomic 41. Muab faib ua cov hlau hloov pauv, Niobium yog cov khoom ntawm chav tsev kub.
TC 99 lwj mus rau dab tsi?
Technetium-99 (99 Tc) yog ib qho isotope ntawm technetium uas decays nrog ib nrab-lub neej ntawm 211,000 xyoo rau ruaj khov ruthenium-99, emitting beta hais, tab sis tsis muaj gamma rays.
Peb pom atomic loj li cas?
Rau ib qho isotope muab, cov lej ntawm cov lej ntawm protons thiab neutrons hauv lub nucleus yog hu ua tus lej loj. Qhov no yog vim hais tias txhua tus proton thiab txhua neutron hnyav ib atomic mass unit (amu). Los ntawm kev ntxiv ua ke ntawm cov protons thiab neutrons thiab muab 1 amu, koj tuaj yeem xam qhov loj ntawm lub atom.
