Video: Puas yog tag nrho cov atoms ntawm magnesium muaj tib lub atomic loj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A: Magnesium , nyob rau hauv nws daim ntawv elemental, muaj 12 protons thiab 12 electrons. Cov neutrons yog ib qho txawv. Magesium qhov nruab nrab atomic mass yog 24.305 atomic loj units, tab sis tsis muaj magnesium atom muaj raws nraim qhov no pawg.
Ib yam li ntawd, nws tau nug, puas yog tag nrho cov atoms ntawm magnesium hauv qauv 1 muaj tib lub atomic loj?
Raws li koj tau kawm yav dhau los, lub atoms ntawm cov isotopes muaj tib lub atomic tus naj npawb (tus naj npawb ntawm protons), ua rau lawv koom nrog ib yam qhov tseem ceeb, tab sis lawv muaj txawv pawg tus lej (tag nrho tus naj npawb ntawm protons thiab neutrons) muab lawv sib txawv atomic masses . Sau rau hauv atomic tooj rau ib Mg atom hauv Qauv 1.
Ib yam li ntawd, dab tsi yog qhov muaj peev xwm loj ntawm magnesium isotope? Ib txwm tshwm sim isotopes
| Isotope | Mas / Da | Ntuj abundance (atom%) |
|---|---|---|
| 24Mg | 23.9850423 (8) | 78.99 (4) |
| 25Mg | 24.9858374 (8) | 10.00 (1) |
| 26Mg | 25.9825937 (8) | 11.01 (3) |
Ntxiv rau qhov no, vim li cas cov atomic loj ntawm magnesium tsis yog tus lej tag nrho?
Atomic loj yeej tsis yog tus lej tus lej rau ntau qhov laj thawj: Cov atomic loj qhia nyob rau hauv ib lub sij hawm lub sij hawm yog qhov hnyav nruab nrab ntawm tag nrho cov ib txwm tshwm sim isotopes. Ua ib qho nruab nrab nws yuav tsis zoo li yuav yog ib qho tus lej . Cov pawg ntawm tus kheej atom hauv atomic loj units yog cov pawg piv rau carbon-12.
Dab tsi yog qhov atomic mass ntawm magnesium?
24.305 Nws
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