(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+)`

What are interstitial compounds? Why are such compounds well known for the transition metals?

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?

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

Fe^(3+) compounds are more stable than Fe^(2+) compounds because

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+) ,