Qhov unit ntawm ib lub atom yog dab tsi?
Qhov unit ntawm ib lub atom yog dab tsi?

Video: Qhov unit ntawm ib lub atom yog dab tsi?

Video: Qhov unit ntawm ib lub atom yog dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Dalton (zeeg)

dalton (kev koom ua ke atomic mass unit )
Chav tsev ntawm pawg
Cim Da los yog u
Lub npe tom qab John Dalton
Kev hloov pauv

Yog li ntawd, qhov ntsuas ntawm atom yog dab tsi?

atomic mass unit

Tom qab, lo lus nug yog, dab tsi yog cov units ntawm atomic hnyav? Cov atomic loj ntawm ib lub ntsiab yog qhov nruab nrab loj ntawm cov atoms ntawm ib lub ntsiab ntsuas nyob rau hauv atomic mass unit (amu, tseem hu ua daltons, D). Cov atomic loj yog qhov hnyav nruab nrab ntawm tag nrho cov isotopes ntawm lub caij, nyob rau hauv uas qhov loj ntawm txhua isotope yog multiplied los ntawm abundance ntawm tej isotope.

Ib yam li ntawd, koj txhais li cas los ntawm 1 amu?

Ib atomic mass unit (symbolized AMU los yog amu ) yog txhais raws li qhov tseeb 1 / 12 qhov loj ntawm ib qho atom ntawm carbon-12. Carbon-12 (C-12) atom muaj rau protons thiab rau neutrons nyob rau hauv nws cov nucleus. Hauv cov ntsiab lus tsis meej, ib AMU yog qhov nruab nrab ntawm proton so mass thiab neutron so mass.

Dab tsi yog atom?

Ib atom ib qho tseem ceeb ntawm qhov teeb meem. Ib atom Nws tus kheej yog tsim los ntawm peb hom me me hu ua subatomic particles: protons, neutrons, thiab electrons. Cov protons thiab cov neutrons ua lub hauv paus ntawm lub atom hu ua nucleus thiab cov electrons ya ncig saum lub nucleus hauv huab me me.

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