Video: Atom stability yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib atom yog ruaj khov vim muaj cov nucleus sib npaug uas tsis muaj lub zog ntau dhau. Yog hais tias lub zog ntawm cov protons thiab cov neutrons nyob rau hauv lub nucleus yog unbalanced, ces tus atom tsis ruaj khov. Cov atom ruaj khov khaws lawv daim ntawv indefinitely, thaum tsis ruaj khov atoms undergo radioactive lwj.
Tom qab ntawd, lub atom ruaj khov txhais li cas?
A ruaj khov atom yog ib atom uas muaj zog binding txaus los tuav lub nucleus ua ke mus tas li. Ib qho tsis ruaj khov atom ua tsis muaj zog binding txaus los tuav lub nucleus ua ke mus tas li thiab hu ua radioactive atom.
Tsis tas li ntawd, lub atom tsis ruaj khov li cas thiaj li muaj kev ruaj ntseg? Ib atom yog ruaj khov yog hais tias lub zog ntawm cov hais uas pleev lub nucleus yog balanced. Ib atom yog tsis ruaj khov (radioactive) yog tias cov rog no tsis sib npaug; yog hais tias lub nucleus muaj ntau tshaj ntawm lub zog sab hauv. Instability ntawm ib atom cov nucleus tuaj yeem tshwm sim los ntawm ntau tshaj ntawm neutrons lossis protons.
Ib yam li ntawd, tib neeg nug, dab tsi txiav txim siab qhov ruaj khov ntawm atom?
Ob yam tseem ceeb uas txiav txim nuclear ruaj khov yog cov neutron/proton ratio thiab tag nrho cov nucleons nyob rau hauv lub nucleus. Qhov tseem ceeb tshaj plaws rau kev txiav txim seb puas yog nucleus ruaj khov yog qhov piv ntawm neutron rau proton. ruaj khov nuclei nrog atomic tus lej txog li 20 muaj qhov sib piv n/p txog li 1/1.
Dab tsi atoms ruaj khov tshaj?
Atoms nyob ntawm lawv qhov ruaj khov tshaj plaws thaum lawv lub zog sab nraud yog qhov khoob ntawm cov hluav taws xob lossis cov khoom siv hluav taws xob. Sodium atoms muaj 11 electrons. Ob tug ntawm no yog nyob rau hauv lub qis zog theem, yim nyob rau hauv lub thib ob zog theem thiab ces ib tug electron nyob rau hauv lub thib peb zog theem.
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