Yuav ua li cas koj xam qhov nruab nrab atomic mass ntawm strontium?
Yuav ua li cas koj xam qhov nruab nrab atomic mass ntawm strontium?

Video: Yuav ua li cas koj xam qhov nruab nrab atomic mass ntawm strontium?

Video: Yuav ua li cas koj xam qhov nruab nrab atomic mass ntawm strontium?
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Yog li ntawd, peb xam nws los ntawm kev noj qhov hnyav pawg ntawm txhua tus isotopes thiab ntxiv rau lawv ua ke. Yog li, rau thawj pawg , peb yuav muab 0.50% ntawm 84 (amu - atomic loj units) = 0.042 amu, thiab ntxiv rau 9.9% ntawm 86 amu = 8.51 amu, thiab lwm yam.

Tom qab ntawd, ib tug kuj yuav nug, ua li cas koj xam qhov nruab nrab atomic mass?

Xam qhov nruab nrab Atomic Mass 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). Qhov nruab nrab atomic mass = f1M1 + f2M2 +…

Kuj Paub, peb hom ntaub ntawv dab tsi xav tau los xam qhov nruab nrab atomic mass? Tus naj npawb ntawm Isotopes uas muaj rau lub ntsiab. Cov Atomic Tus nab npawb rau lub ntsiab. Qhov feem pua ntawm txhua qhov isotope.

Ib tug kuj yuav nug, dab tsi tus nqi yog ze tshaj rau atomic loj ntawm strontium?

Strontium . Hauv nws daim ntawv tshaj tawm xyoo 1961, Pawg Neeg Saib Xyuas tau pom zoo Ar(Sr) = 87.62 raws li cov pawg -spectrometric kev txiav txim siab ntawm Nier. Qhov no tus nqi tau hloov kho rau Ar(Sr) = 87.62(1) hauv 1969 thiab nws tseem tsis tau hloov txij li thaum.

Dab tsi muaj qhov loj ntawm 1 amu?

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

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