Video: Yuav ua li cas Mendeleev paub qhov twg yuav tawm qhov khoob rau cov ntsiab lus tsis pom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Mendeleev tshuav qhov khoob nyob rau hauv nws lub rooj rau qhov chaw cov ntsiab lus tsis paub thaum lub sijhawm. Los ntawm saib cov chemicalproperties thiab lub cev muaj zog ntawm lub cov ntsiab lus tom ntej a qhov sib txawv , nws kuj tuaj yeem kwv yees cov khoom ntawm cov no yam tsis tau pom . Cov keeb germanium tau tshawb pom tom qab.
Hais txog qhov no, vim li cas Mendeleev tawm qhov khoob rau cov ntsiab lus tsis pom?
Tab sis tsis pom qhov no yog qhov teeb meem, Mendeleev xav tias nws tsuas txhais tau tias tus cov ntsiab lus uas belonged nyob rau hauv lub muaj gap tseem tsis tau pom. Nws kuj tseem tuaj yeem ua haujlwm tawm atomic loj ntawm qhov ploj lawm cov ntsiab lus , thiab yog li twv lawv cov khoom. Thiab thaum lawv tau pom, Mendeleev hloov mus rau beright.
Ib yam li ntawd, vim li cas thiaj muaj qhov chaw seem nyob rau hauv lub rooj zaum? Teb thiab piav qhia: Mendeleev sab laug qhov chaw nws daim ntawv qhia hnub vim nws kwv yees muaj cov ntsiab lus uas tseem tsis tau pom dua uas yuav haum rau hauv cov no qhov chaw.
Tom qab ntawd, ib tug kuj yuav nug, ua li cas Mendeleev paub tawm qhov chaw?
Mendeleev mus ntxiv. Nws kho qhov paub atomic masses ntawm qee lub ntsiab lus thiab nws siv cov qauv hauv nws lub rooj los kwv yees cov khoom ntawm cov ntsiab lus nws xav tias yuav tsum muaj tab sis tseem tsis tau pom. Nws tso tseg qhov chaw nyob rau hauv nws daim ntawv raws li placeholder los sawv cev rau cov tsis paub hais tias.
Dab tsi ua rau Mendeleev paub tseeb tias nws yuav tsum tso qhov khoob hauv nws lub rooj?
Mendeleev tshuav qhov khoob hauv nws raws sij hawm rooj vim nws paub tias cov ntsiab lus no muaj, tab sis tseem tsis tau pom. Nws ntseeg tias tus cov ntsiab lus yuav yuav thaum kawg pom thiab yuav haum txig rau hauv cov gap.
Pom zoo:
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