Cov txheej txheem:
Video: Koj tuaj yeem suav tus naj npawb ntawm neutrons hauv ib lub atom li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov no txhais tau tias nrhiav tus naj npawb ntawm neutrons koj rho tawm tus naj npawb ntawm protons los ntawm pawg tus lej . Nyob rau hauv lub sij hawm, lub tus lej atomic yog cov tus naj npawb ntawm protons , thiab cov atomic mass yog qhov loj tus lej.
Ntawm no, koj yuav nrhiav tau tus naj npawb ntawm protons neutrons thiab electrons li cas?
Kev piav qhia: Koj tuaj yeem rho tawm cov atomic tus lej los ntawm pawg tus lej nyob rau hauv thiaj li yuav nrhiav tus tus lej ntawm neutrons . Yog hais tias lub atom yog nruab nrab, lub tus lej ntawm electrons yuav sib npaug rau cov tus naj npawb ntawm protons.
Tsis tas li ntawd, koj yuav ua li cas nrhiav tau tus naj npawb ntawm neutrons tsis muaj atomic loj? Cov atomic loj yog qhov hnyav nruab nrab pawg ntawm tag nrho cov isotopes ntawm ib lub ntsiab. Yog peb round tawm ntawm atomic loj mus rau qhov ze tshaj plaws tus lej thiab rho tawm cov tus lej atomic los ntawm nws, peb tau txais tus naj npawb ntawm neutrons.
Yog li ntawd, koj yuav nrhiav tau tus naj npawb ntawm atoms li cas?
Kev piav qhia:
- Mass → Moles thiab Moles → Atoms.
- 196.967 ua.
- Yog li, yog tias koj tau txais qhov loj ntawm ib lub caij, koj siv lub sij hawm lub sij hawm kom pom nws cov molar loj, thiab muab cov khoom loj los ntawm qhov sib txuam ntawm molar mass.
- Thaum koj muaj moles, muab faib los ntawm Avogadro tus lej los xam cov naj npawb ntawm cov atoms.
Yuav ua li cas nrhiav tau tus naj npawb ntawm neutrons hauv ib qho isotope?
Yuav nrhiav tau tus naj npawb ntawm neutrons hauv ib qho isotope , rho tawm tus naj npawb ntawm protons los ntawm atomic mass ntawm lub isotope . Lub atomic tus lej ntawm lub ntsiab sib npaug ntawm tus naj npawb ntawm protons.
Pom zoo:
Muaj pes tsawg neutrons nyob rau hauv chromium atom nrog ib tug loj tus naj npawb ntawm 54?
Chromium 54: Tus lej atomic Z = 24, muaj 24 protons thiab 24 electrons. Tus lej A = 54. Tus lej ntawm neutrons = A – Z = 54 – 24 = 30
Tus naj npawb ntawm chromosomes hauv tus ntxhais cell piv li cas?
Yuav ua li cas cov ntxhais cell piv rau niam txiv cell? Npaj rau mitosis, ib lub cell tsim ib daim qauv ntawm nws DNA. Thaum lub sij hawm mitosis, DNA coils rau hauv condensed chromatid khub hu ua chromosomes. Homologous khub tau sib cais, thiab ob lub hlwb ua rau tus ntxhais muaj ib nrab ntawm ntau chromosomes ib lub xov tooj ntawm tes
Yuav ua li cas koj nrhiav tau tus naj npawb ntawm electrons nyob rau hauv ib tug uncharged atom?
Tus naj npawb atomic sawv cev rau tus naj npawb ntawm protons hauv atom lub nucleus. Hauv ib qho atom uas tsis tau them nyiaj, tus naj npawb ntawm cov protons ib txwm sib npaug ntawm cov electrons. Piv txwv li, carbon atoms suav nrog rau protons thiab rau electrons, yog li cov pa roj carbon monoxide yog 6
Yuav ua li cas koj paub tus naj npawb ntawm protons hauv ib lub atom?
Tus naj npawb ntawm protons, neutrons, thiab electrons hauv atom tuaj yeem txiav txim siab los ntawm cov txheej txheem yooj yim. Tus naj npawb ntawm protons nyob rau hauv lub nucleus ntawm lub atom yog sib npaug rau atomic tooj (Z). Tus naj npawb ntawm electrons nyob rau hauv ib tug nruab nrab atom yog sib npaug zos rau tus naj npawb ntawm protons
Tus naj npawb ntawm neutrons hauv cesium yog dab tsi?
Daim duab ntawm lub nuclear muaj pes tsawg leeg thiab electron configuration ntawm ib tug atom ntawm caesium-133 (atomic tooj: 55), feem ntau isotope ntawm lub caij no. Lub nucleus muaj 55 protons (liab) thiab 78 neutrons (xiav)