a, Ta có hệ \(\left\{{}\begin{matrix}4Z_X+6Z_Y=152\\2Z_X-2Z_Y=36\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}Z_X=26\\Z_Y=8\end{matrix}\right.\) => X là Fe ; Y là O
Vị trí:
\(Fe\left(Z=26\right):1s^22s^22p^63s^23p^64s^23d^6\)
=> \(1s^22s^22p^63s^23p^64s^23d^6\)
\(\left\{{}\begin{matrix}STT:26\\Chukỳ:4\\Nhóm:IIIB\end{matrix}\right.\)
\(O\left(Z=8\right):1s^22s^22p^4\)
\(\left\{{}\begin{matrix}STT:8\\Chukỳ:2\\Nhóm:VIA\end{matrix}\right.\)
b, Cấu hình electron:
\(Fe^{2+}:1s^22s^22p^63s^23p^63d^6\)
\(Fe^{3+}:1s^22s^22p^63s^23p^63d^5\)
\(S^{2-}:1s^22s^22p^63s^23p^6\)
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