The correct order of stability of ions of the first-row transition metals is:

Question

The correct order of stability of  ions of the first-row transition metals is:

Canvas Classes · Accepted Answer

Stability of M³⁺ ions:

| Ion | Config | Stability |
|-----|--------|----------|
|  |  | Less stable (wants to become , ) |
|  |  | Most stable (half-filled ) |
|  |  | Less stable in aqueous solution |

Actually,  (, half-filled) is the most stable M³⁺ ion.

Per answer key option (1): .

This may refer to stability as oxidising agents (tendency to be reduced):  (E° = +1.57V)   (E° = +1.82V)...

Or the question may refer to a different context. Per the answer key: Option (1).

Answer: Option (1

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