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  • Câu hỏi:

    (TSĐH A 2010) Nhận định nào sau đây đúng khi nói về 3 nguyên tử: \(_{12}^{26}\textrm{X};\ _{26}^{55}\textrm{Y};\ _{12}^{26}\textrm{Z}\).

    \(_{13}^{26}\textrm{X},\ _{26}^{56}\textrm{Y},\ _{12}^{26}\textrm{Z}:\ _{Z}^{A}\textrm{M}\)
    ⇒ X và Z có cùng số khối.

    Hãy trả lời câu hỏi trước khi xem đáp án và lời giải
    ADMICRO/
 
 

 

 
 

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