dongjungseongjahaek
isotope
isotope (noyau avec neutrons) ; noyau isotopique
동중성자핵은 같은 원자 번호를 가지지만 다른 질량을 가진 원소입니다.
dongjungseongjahaegeun gat-eun wonja beonhoreul gajijiman daleun jilsang-eul gajin wonsoimnida.
An isotope has the same atomic number but a different mass.
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