Question

An atom (A) has 8 electrons in its right shell and is isoelectronically with the trivalent cation of an atom (B) when the quantum numbers of the last electron of the electron distribution are determined, when the atom (B) becomes negatively ionized.

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Answer to a math question An atom (A) has 8 electrons in its right shell and is isoelectronically with the trivalent cation of an atom (B) when the quantum numbers of the last electron of the electron distribution are determined, when the atom (B) becomes negatively ionized.

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Rasheed
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109 Answers
1. Determina la configuración electrónica del átomo (A) para encontrar que tiene 8 electrones en la última capa:
1s^2 2s^2 2p^6

2. Determina la configuración electrónica del mismo átomo (A) pero como ion trivalente para que sea iso-electrónico:
A^{3-} \Rightarrow 1s^2 2s^2 2p^6 3s^2 3p^6

3. Identifica la configuración electrónica restante del átomo (B) original antes de ser ionizado negativamente, quitando los 3 electrones añadidos previamente:
B \Rightarrow 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^3

4. Para el último electrón de este átomo (considerando ionización):
3d^3 \Rightarrow l=2,\ m=1,\ s=\frac{1}{2}

5. Utiliza los números cuánticos del último electrón del ion negativamente cargado:
n=3,\ l=2,\ m=1,\ s=\frac{1}{2}

Conclusión:
\frac{3}{2},2,1,\frac{1}{2}

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