Question:medium
Assertion (A): Cuprous salts are diamagnetic.
Reason (R): Cuprous ion has completely filled 3d-orbitals.
Assertion (A): Cuprous salts are diamagnetic.
Reason (R): Cuprous ion has completely filled 3d-orbitals.
Reason (R): Cuprous ion has completely filled 3d-orbitals.
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Remember, diamagnetism occurs when all electrons are paired, regardless of the orbital configuration.
Updated On: Feb 24, 2026
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true.
Show Solution
The Correct Option is C
Solution and Explanation
Cuprous salts (Cu$^+$) are diamagnetic as the Cu$^+$ ion has a fully occupied 3d orbital. However, the justification provided is inaccurate. While Cu$^+$ has 10 electrons in its 3d orbital, it exhibits diamagnetism due to the absence of unpaired electrons. Therefore, the explanation in Reason (R) is insufficient to fully support the assertion.
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