Question:
Which of the following arrangements does not represent the correct order of the property stated against it?
Which of the following arrangements does not represent the correct order of the property stated against it?
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Maximum paramagnetism occurs for:
d⁵ configuration
Updated On: Mar 19, 2026
- V²+ < Cr²+ < Mn²+ < Fe²+ : paramagnetic behaviour
- Ni²+ < Co²+ < Fe²+ < Mn²+ : ionic size
- Co³+ < Fe³+ < Cr³+ < Sc³+ : stability in aqueous solution
- Sc < Ti < Cr < Mn : number of oxidation states
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The Correct Option is A
Solution and Explanation
Step 1: Paramagnetic behaviour depends on the number of unpaired electrons.
Step 2: Electron configurations: V²+: d³, Cr²+: d⁴, Mn²+: d⁵, Fe²+: d⁶
Step 3: Number of unpaired electrons increases up to d⁵ and then decreases. ⟹ Fe²+ has fewer unpaired electrons than Mn²+ Hence the given order is incorrect.
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