Video: Vim li cas cov kws tshawb fawb tsis lees txais Mendeleev lub sijhawm teem sijhawm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Vim hais tias cov khoom rov ua dua lawv tus kheej tsis tu ncua, lossis tsis tu ncua, ntawm nws daim duab , lub system los ua lub npe hu ua daim ntawv qhia hnub . Hauv kev tsim nws rooj , Mendeleev tsis tau ua raws li qhov kev txiav txim ntawm atomic mass. Nws swapped ib co ntsiab nyob ib ncig ntawm.
Tsis tas li ntawd, dab tsi yog qhov teeb meem nrog Mendeleev lub sij hawm ntev?
Lwm tus teeb meem Mendeleev ntsib yog tias qee zaum qhov hnyav tshaj plaws tom ntej hauv nws daim ntawv teev npe tsis haum cov khoom ntawm qhov chaw muaj nyob tom ntej ntawm lub rooj . Nws yuav hla qhov chaw ntawm lub rooj , tawm hauv qhov, txhawm rau muab cov khoom tso rau hauv ib pawg nrog cov khoom uas muaj cov khoom zoo sib xws.
Kuj Paub, cov kws tshawb fawb twg tsis nyob ntawm lub rooj zaum? Plaub tsis- cov kws tshawb fawb hauv qhov no rooj txuas nrog cov ntsiab lus uas yog tsis yog lub npe hu ua kom hwm tus neeg ncaj qha, tab sis theej tau lub npe rau qhov chaw lossis yam khoom uas tau muab npe rau cov neeg no.
Rooj.
| Element | Lub npe | Bohrium |
|---|---|---|
| Cim | Bh | |
| Discovery | 1981 | |
| Tus kheej | Lub npe | Niels Bohr |
| Tshwj xeeb | Tus kws tshawb fawb |
Tsis tas li cov lus nug yog, vim li cas Mendeleev tawm qhov khoob hauv nws lub rooj zaum?
Mendeleev tshuav qhov khoob hauv nws lub rooj zaum vim hais tias cov khoom ntawm cov khoom paub tau kwv yees lwm yam, raws li tseem tsis tau pom, cov ntsiab lus hauv cov chaw no. Mendeleev muab tso ua ke daim ntawv qhia hnub Raws li cov khoom paub txog cov atoms, tshwj xeeb tshaj yog cov atomic loj, sib npaug loj thiab valency.
Yuav ua li cas yog qhov teeb meem nrog lub sij hawm thaum ntxov?
Yog li, muaj kev sib raug zoo ntawm qhov kev txiav txim ntawm atomic masses thiab rov ua dua ntawm lawv cov khoom. Nws teeb meem : Nws tsis tau tawm qhov chaw- xav tias tag nrho cov ntsiab lus tau pom. Txoj cai lij choj tau zoo tshaj plaws rau Calcium tab sis qee qhov hnyav dhau los ua kom haum Newland lub tswv yim.
Pom zoo:
Vim li cas thiaj tseem ceeb rau cov kws tshawb fawb nrhiav txoj hauv kev los npaj cov ntsiab lus?
Inventor: Dmitri Mendeleev
Thaum twg Mendeleev tau teeb tsa cov ntsiab lus hauv lawv lub sijhawm teem sijhawm?
1869 Ntxiv mus, qhov kev txiav txim dab tsi Mendeleev npaj cov ntsiab lus nyob rau hauv lub sij hawm? Kev piav qhia: Mendeleev yuam nws cov ntsiab lus hauv nws daim ntawv qhia hnub hauv xaj ntawm atomic mass. Qhov nws pom los ntawm qhov no yog qhov zoo sib xws cov ntsiab lus tau pab pawg ua ke.
Vim li cas Bohr txoj kev xav tau txais los ntawm cov kws tshawb fawb?
Bohr tau qhia lub tswv yim hloov pauv uas cov hluav taws xob 'dhia' ntawm qib zog (orbits) hauv quantum zam, uas yog, tsis tau muaj nyob rau hauv ib lub xeev. Bohr txoj kev xav hais tias electrons muaj nyob rau hauv lub orbits nyob ib ncig ntawm lub nucleus yog tus yuam sij rau lub sij hawm repetition ntawm cov khoom ntawm lub ntsiab
Vim li cas nws zoo tshaj rau cov kws tshawb fawb siv lub npe los ntawm cov txheej txheem taxonomic?
Vim li cas nws zoo tshaj rau cov kws tshawb fawb siv lub npe los ntawm cov txheej txheem taxonomic? Lub npe txheej txheem sib txawv ntawm cov tsov ntxhuav roob thiab pumas. Lub Linnaean taxonomic system faib cov kab mob mus rau hauv kev faib hu ua taxa. Yog tias ob lub cev muaj nyob rau tib pawg taxonomic, lawv muaj feem cuam tshuam
Tib neeg ua ntej hloov cov qoob loo li cas cov kws tshawb fawb siv niaj hnub no los hloov cov qoob loo?
Los ntawm cucumbers thiab carrots rau dawb nplej thiab nplej, peb tib neeg tau hloov cov noob ntawm yuav luag txhua yam zaub mov peb noj. Niaj hnub no cov kws tshawb fawb tuaj yeem tsim qhov kev hloov pauv sai sai los ntawm kev xaiv ib lub noob uas yuav ua rau muaj qhov xav tau thiab tso cov noob ncaj qha mus rau hauv chromosome ntawm lub cev