Video: Carbon isotopes txawv li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pa roj carbon -12 thiab carbon -14 yog ob isotopes ntawm lub ntsiab carbon . Cov txawv nruab nrab carbon -12 thiab carbon -14 yog tus naj npawb ntawm neutrons nyob rau hauv txhua ntawm lawv atoms. Tus lej muab tom qab lub npe atom qhia tus naj npawb ntawm protons ntxiv rau neutrons hauv atom lossis ion. Atoms ntawm ob isotopes ntawm carbon muaj 6 protons.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi ua rau 3 isotopes ntawm carbon txawv?
Qhov no txhais tau tias tag nrho peb isotopes muaj txawv atomic masses ( carbon -14 yog qhov hnyav tshaj), tab sis qhia tib tus lej atomic (Z = 6). Chemically, tag nrho peb yog indistinguishable, vim hais tias tus naj npawb ntawm electrons nyob rau hauv txhua ntawm peb isotopes yog ib yam.
Tom qab ntawd, lo lus nug yog, vim li cas carbon yog isotope? Ob leeg 12C thiab 13C hu ua ruaj khov isotopes txij li thaum lawv tsis lwj mus rau hauv lwm yam ntaub ntawv los yog cov khoom nyob rau lub sij hawm. Qhov tsawg carbon -14 (14C) isotope muaj yim neutrons nyob rau hauv nws cov nucleus. Tsis zoo li 12C thiab 13C, qhov no isotope tsis ruaj tsis khov, los yog radioactive. Nyob rau tib lub sijhawm, a 14C atom yuav lwj mus rau hauv cov khoom ruaj khov.
Cov lus nug tseem yog, ua li cas isotopes txawv ntawm ib leeg?
isotopes ntawm ib lub caij muaj tib tus lej atomic (tus naj npawb ntawm electrons / protons) tab sis txawv atomic masses (tus naj npawb ntawm electrons + neutrons). yog li ntawd, lawv yog txawv ntawm ib leeg rau lub hauv paus ntawm tus naj npawb ntawm neutrons.
Vim li cas carbon 14 tsis suav tias yog isotope?
Vim tias atoms ib txwm muaj tib tus nqi ntawm protons thiab neutrons. Lawv txhua tus muaj tib tus lej atomic, tib tus lej ntawm protons. Piav vim li cas carbon - 14 thiab nitrogen- 14 yog tsis suav tias yog isotopes ntawm ib leeg? Vim lawv yog ob yam sib txawv.
Pom zoo:
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