CUET · CHEMISTRY · PYQ PAPER 2023
Fe shows extra stability as \(\text{Fe}^{3+}\) due to :
- A \(\text{d}^{10}\)
- B \(\text{d}^5\)
- C \(\text{s}^0\)
- D \(\text{s}^2\)
Answer & Solution
Correct Answer
(B) \(\text{d}^5\)
Step-by-step Solution
Detailed explanation
\(\text{Fe}^{3+}\) configuration is \([\text{Ar}] 3\text{d}^5\). The \(\text{d}^5\) configuration is a half-filled subshell, which provides extra stability.
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