Video: Dab tsi yog qhov hnyav tshaj plaws uas muaj tsawg kawg yog ib qho isotope ruaj khov?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Bismuth -209 (209Bi) yog lub isotope ntawm bismuth nrog qhov ntev tshaj plaws paub ib nrab-lub neej ntawm ib lub xov tooj cua isotope uas dhau α-decay (alpha decay). Nws muaj 83 protons thiab tus lej khawv koob ntawm 126 neutrons, thiab atomic loj ntawm 208.9803987 amu (atomic mass units).
Bismuth-209.
| General | |
|---|---|
| Protons | 83 |
| Neutrons | 126 |
| Nuclide cov ntaub ntawv | |
| Ntuj abundance | 100% |
Ua raws li qhov no hauv kev xav, dab tsi yog qhov hnyav tshaj plaws isotope?
Rov qab mus rau thawj lo lus nug, yog qhov tsis yog tus kws tshaj lij txoj kev kwv yees tias txhuas yog tus hnyav ruaj khov lub ntsiab yog lawm? Zoo, tsis ceev heev…. Cov hmoov lead tshwm sim yog tsim los ntawm plaub isotopes : lead-204, lead-205, lead-207, thiab lead-208, nrog rau tom kawg ua ntau tshaj ib nrab.
Ib sab saum toj no, dab tsi yog qhov hnyav tshaj plaws uas tsis muaj xov tooj cua? Txawm li cas los xij, nyob ib ncig ntawm 2009 lossis yog li nws tau pom tias bismuth tsis muaj zog ntawm cov xov tooj cua tsis muaj zog (ib nrab lub neej yog qhov ntev heev, ntev tshaj li lub hnub nyoog ntawm lub ntiaj teb). Mus txog qhov ntawd bismuth tau xav tias yog qhov hnyav tshaj plaws uas tsis muaj xov tooj cua. Niaj hnub no, qhov hnyav tshaj plaws uas tsis muaj hluav taws xob yog lead-208.
Lub ntsiab lus twg muaj pes tsawg tus isotopes?
cesium
Qhov twg yog qhov ruaj khov tshaj plaws?
Noble gases yog cov tshuaj cov ntsiab lus nyob rau hauv pawg 18 ntawm lub sij hawm. Lawv yog cov ruaj khov vim muaj ntau tus naj npawb ntawm valence electrons lawv lub plhaub sab nraud tuaj yeem tuav.
Pom zoo:
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