Nguyen tu X co tong so hat co ban la 49. Trong do so hat khong mang dien bang 53,125% so hat mang dien. Xach dinh so e,p,n

Nguyen tu X co tong so hat co ban la 49. Trong do so hat khong mang dien bang 53,125% so hat mang dien. Xach dinh so e,p,n

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1 Answer

  1. Đáp án:

    p=e = 16 (hạt)

    n = 17 (hạt)

    Giải thích các bước giải:

    \(\left\{ \matrix{

    2p + n = 49 \hfill \cr

    n = {{53,125\% } \over {100\% }}.2p \hfill \cr} \right. \Rightarrow \left\{ \matrix{

    2p + n = 49 \hfill \cr

    1,0625p – n = 0 \hfill \cr} \right. \Rightarrow \left\{ \matrix{

    p = 16 \hfill \cr

    n = 17 \hfill \cr} \right.\)

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