Video: Daim duab Bohr txhais li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Daim duab Bohr . Bohr daim duab qhia cov electrons orbiting lub nucleus ntawm ib lub atom zoo li cov ntiaj chaw orbit ncig lub hnub. Hauv Bohr qauv , electrons yog pictured raws li kev mus ncig hauv lub voj voog ntawm cov plhaub sib txawv, nyob ntawm seb lub caij twg koj muaj. Txhua lub plhaub ua tau tsuas tuav qee tus lej ntawm electrons.
Yog li ntawd, daim duab Bohr yog dab tsi?
Daim duab Bohr yog ib qho yooj yim pom kev sawv cev ntawm lub atom uas yog tsim los ntawm Danish physicist Niels Bohr nyob rau hauv 1913. Daim duab qhia txog lub atom raws li ib tug zoo nqi. nucleus nyob ib puag ncig electrons uas taug kev nyob rau hauv ncig orbits txog lub nucleus nyob rau hauv discrete zog theem.
Qhov thib ob, tus qauv Bohr tau txais txoj cai li cas? Xyoo 1913, Bohr qhia tias electrons tsuas tuaj yeem muaj qee yam kev txav mus los: Electrons hauv atoms orbit lub nucleus. Cov electrons tuaj yeem tsuas yog orbit ruaj khov, tsis muaj hluav taws xob, hauv qee qhov orbits (hu ua Bohr lub "stationary orbits") ntawm ib qho kev sib cais ntawm qhov deb ntawm lub nucleus.
Cov lus nug tseem yog, Bohr qauv piav qhia li cas?
Bohr Atomic Qauv : Xyoo 1913 Bohr npaj nws lub plhaub quantized qauv ntawm atom rau piav yuav ua li cas electrons tuaj yeem muaj qhov chaw ruaj khov nyob ib ncig ntawm lub nucleus. Lub zog ntawm ib qho hluav taws xob nyob ntawm qhov loj ntawm lub orbit thiab qis dua rau cov orbits me. Radiation tuaj yeem tshwm sim tsuas yog thaum lub electron dhia ntawm ib lub orbit mus rau lwm qhov.
Yuav ua li cas kos ib daim duab Bohr?
- Kos lub nucleus.
- Sau tus naj npawb ntawm neutrons thiab tus naj npawb ntawm protons hauv lub nucleus.
- Kos thawj qib zog.
- Kos cov electrons hauv qib zog raws li cov cai hauv qab no.
- Nco ntsoov tias muaj pes tsawg tus electrons muab tso rau hauv txhua qib thiab pes tsawg tus electrons tshuav siv.
Pom zoo:
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