Video: Yuav ua li cas koj xam atomic mass xyaum teeb meem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
VIDEO
Tom qab ntawd, koj yuav daws li cas rau cov teeb meem atomic loj?
Rau xam tus atomic loj ntawm ib qho atom ntawm ib lub caij, ntxiv rau pawg ntawm protons thiab neutrons. Piv txwv: Nrhiav cov atomic loj ntawm ib qho isotope ntawm carbon uas muaj 7 neutrons. Koj tuaj yeem pom los ntawm cov lus ntu ntu uas cov pa roj carbon muaj atomic tus naj npawb ntawm 6, uas yog nws tus naj npawb ntawm protons.
Tsis tas li ntawd, tus lej atomic loj yog dab tsi? Cov pawg naj npawb (Symbol A, los ntawm German lo lus Atomgewicht [ atomic luj]), kuj hu ua atomic loj naj npawb los yog nucleon tus lej , yog tag nrho tus lej ntawm protons thiab neutrons (ua ke hu ua nucleons) hauv ib atomic nucleus. Cov pawg naj npawb Nws txawv rau txhua qhov sib txawv ntawm cov isotope ntawm cov khoom siv tshuaj.
Kuj tseem paub yog, dab tsi yog cov qauv ntawm atomic mass?
Nruab nrab atomic loj = f1M1 + f2M2 +… + f M qhov twg f yog cov feem uas sawv cev rau lub ntuj abundance ntawm cov isotope thiab M yog tus pawg tus lej (qhov hnyav) ntawm cov isotope. Qhov nruab nrab atomic loj ntawm ib lub caij tuaj yeem pom ntawm lub rooj zaum, feem ntau nyob rau hauv lub cim elemental.
Qhov nruab nrab atomic mass hauv chemistry yog dab tsi?
Cov nruab nrab atomic mass ntawm ib lub ntsiab yog cov sum ntawm cov pawg ntawm nws cov isotopes, txhua qhov sib npaug los ntawm nws qhov kev nplua nuj (tus lej suav nrog feem pua ntawm atoms ntawm cov khoom uas yog ntawm ib qho isotope muab).
Pom zoo:
Yuav ua li cas koj xam qhov nruab nrab atomic mass ntawm strontium?
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Koj ua li cas xam cov teeb meem titration?
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Vim li cas lub Sijhawm Table yog teem los ntawm tus lej atomic thiab tsis yog atomic mass? Atomic tooj yog tus naj npawb ntawm protons nyob rau hauv lub nucleus ntawm txhua lub ntsiab lub atoms. Tus lej ntawd tshwj xeeb rau txhua yam. Atomic loj yog txiav txim los ntawm tus naj npawb ntawm protons thiab neutrons ua ke