Carbon-14 (14 C): Cov carbon isotope uas nws nucleus muaj rau protons thiab yim neutrons. Qhov no muab atomic loj ntawm 14 amu. C yog radioactive nrog ib nrab-lub neej ntawm 5730 xyoo (thiab yog li no isotope qee zaum hu ua radiocarbon); vim qhov no nws yog siv nyob rau hauv radiocarbon dating.
lub ntsiab lus carbon-14 yog dab tsi?
Carbon-14 (14 C), lossis radiocarbon, yog ib lub xov tooj cua isotope ntawm carbon nrog lub atomic nucleus uas muaj 6 protons thiab 8 neutrons. Nws muaj nyob rau hauv cov ntaub ntawv organic yog lub hauv paus ntawm radiocarbon yos txoj kev pioneered los ntawm Willard Libby thiab cov npoj yaig (1949) rau hnub tim archaeological, geological thiab hydrogeological qauv.
Puas carbon-14 muaj 14 electrons?
Neutral carbon-14 muaj rau protons, yim neutrons, thiab rau electrons; nws cov lej yog 14 (rau protons ntxiv rau yim neutrons). Ob hom kev hloov pauv ntawm carbon no yog isotopes. … Cov isotopes no hu ua radioisotopes, thiab cov txheej txheem uas lawv tso cov khoom thiab lub zog yog hu ua kev lwj.
Puas yog carbon-14 muaj 14 neutrons?
Carbon-14 atoms muaj ob ntxiv neutrons, muab tag nrho 8 neutrons. Carbon-14 muaj atomic loj ntawm 14 (=6 protons + 8 neutrons). Cov neutrons ntxiv ua rau cov nucleus ntawm carbon-14 tsis ruaj khov.
Vim li cas C 14 tsis ruaj khov?
Vim tias carbon-14 muaj rau protons, nws tseem yog carbon, tab sis ob ntxiv neutrons ua raunucleus tsis ruaj khov. Txhawm rau kom ncav cuag lub xeev ruaj khov dua, carbon-14 tso tawm cov khoom tsis zoo los ntawm nws cov nucleus uas hloov ib qho ntawm cov neutrons rau hauv proton.
