Why are `Mn^(2+)` compounds more stable than `Fe^(2+)` toward oxidation to their `+3` state?

Why arre Mn^(2+) compounds more stable than Fe^(2+) toward oxidation to their +3 state?

(a) Why are Mn^(2+) compounds more stable than Fe^(2+) towards oxidation to their +3 state. (b) What are interstitial compounds ? Why are such compounds well-known for transition metals ? (c ) Write electronic configuration of Pm^(3+)

(a). Why Mn^(2+) compounds are more stable than Fe^(2+) towards oxidation to their +3 state? (b). Calculate the magnetic moment of V^(3+) ion. (c). [Ti(H_2O)_6_^(3+) gives violet coloured aqueous solution but [Mg(H_2O)_6]^(2+) solution is colourless. (d). [Ti(H_2O)_6]^(3+) is coloured whereas [Sc(H_2O)_6]^(3+) is colourless. Why?

(i) Why do lanthanoids have very similar chemical reactivity? (ii) Why are Mn^(2+) compounds more stable than Fe^(2+) compounds towards oxidation to their +3 oxidation slales?

S_(1) : Mn^(2+) compounds more stable than Fe^(2+) towards oxidation to their +3 state. S_(2) : Titanium and copper both in the first series of transition metals exhibits +1 oxidation state most frequently. S_(3) : Cu^(+) ions is stable in aqueous solutions. S_(4) : The E^(0) value for the Mn^(3+)//Mn^(2+) couple much more positive than that for Cr^(3+)//Cr^(2+) or Fe^(3+)//Fe^(2+) ,

Why Mn^(2+) compounds are more stable than Fe^(2+) compounds towards oxidation to their + 3 state ?