JEE MAIN - Chemistry (2024 - 9th April Morning Shift - No. 9)
The electronic configuration of $$\mathrm{Cu}(\mathrm{II})$$ is $$3 \mathrm{~d}^9$$ whereas that of $$\mathrm{Cu}(\mathrm{I})$$ is $$3 \mathrm{~d}^{10}$$. Which of the following is correct?
$$\mathrm{Cu}(\mathrm{II})$$ is more stable
$$\mathrm{Cu}$$ (II) is less stable
$$\mathrm{Cu}(\mathrm{I})$$ and $$\mathrm{Cu}(\mathrm{II})$$ are equally stable
Stability of $$\mathrm{Cu}(\mathrm{I})$$ and $$\mathrm{Cu}(\mathrm{II})$$ depends on nature of copper salts
Explanation
$$\mathrm{Cu}^{2+}$$ is more stable.
$$\mathrm{Cu}^{+} \longrightarrow \mathrm{Cu}^{2+}+\mathrm{Cu}$$ disproportionation reaction
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