1. Tardigrade
  2. Question
  3. Chemistry
  4. Among the following the most stable ion is:

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Q. Among the following the most stable ion is:

The d-and f-Block Elements

Solution:

$Fe ^{2+} \to 3 d ^{6}, Sc ^{4+} \to 3 p ^{5}, Mn ^{3+}\to 3 d ^{4}$

$Mn ^{2+} \to 3 d ^{5}$ (Exactly half-filled hence stable)