Lub atomic mass txhais li cas hauv science?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Ib atomic loj (symbol: m_a) yog pawg ntawm ib leeg atom ntawm ib tug chemical element. Nws suav nrog cov pawg ntawm 3 subatomic particles uas ua ib qho atom : protons, neutrons thiab electrons. 1 atomic loj unit yog txhais raws li 1/12 ntawm lub pawg ib tug carbon-12 atom.

Hais txog qhov no, dab tsi yog atomic mass hauv science?

Atomic Mass los yog Nyhav Txhais Atomic loj , uas tseem hu ua atomic hnyav, yog qhov nruab nrab pawg ntawm atoms ntawm ib lub caij, xam siv cov txheeb ze ntawm cov isotopes nyob rau hauv ib txwm tshwm sim. Atomic loj qhia qhov loj ntawm ib atom.

Ib yam li ntawd, atomic mass hauv physics yog dab tsi? physics . Atomic loj , qhov ntau ntawm cov teeb meem muaj nyob rau hauv ib atom ntawm ib yam. Nws yog qhia raws li ib tug ntau yam ntawm ib tug kaum ob lub pawg cov pa roj carbon-12 atom , 1.992646547 × 10⁻²³ gram, uas yog muab rau ib atomic loj ntawm 12 units.

Ntawm no, atomic mass yog dab tsi thiab nws txiav txim siab li cas?

Atomic loj txhais tau tias yog tus naj npawb ntawm protons thiab neutrons hauv ib qho atom , qhov twg txhua proton thiab neutron muaj ib pawg ntawm kwv yees li 1 amu (1.0073 thiab 1.0087, ntsig txog). Cov electrons nyob rau hauv ib tug atom Nws yog me me heev piv rau protons thiab neutrons uas lawv pawg yog negligible.

Dab tsi yog atomic mass siv rau?

Atomic loj feem ntau yog xam los ntawm kev ntxiv cov protons thiab neutrons ua ke, tsis quav ntsej cov electrons vim lawv qhov me me. Daltons yog cov qauv ntsuas siv rau ntsuas atomic loj . Atomic loj units, los yog amu, kuj siv rau ntsuas atomic masses , thiab lawv sib npaug rau daltons.