JEE MAIN - Chemistry (2024 - 8th April Evening Shift - No. 23)
Total number of unpaired electrons in the complex ions $$[\mathrm{Co}(\mathrm{NH}_3)_6]^{3+}$$ and $$[\mathrm{NiCl}_4]^{2-}$$ is ________.
Answer
2
Explanation
$$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}: \mathrm{Co}^{3+}: \mathrm{t}_{2 \mathrm{~g}}^6 \mathrm{e}_{\mathrm{g}}^0: \mathrm{n}=0$$
$$\left[\mathrm{NiCl}_4\right]^{2-}: \mathrm{Ni}^{2+}: t_{2 \mathrm{~g}}^6 \mathrm{e}_{\mathrm{g}}^2: \mathrm{n}=2$$
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