Magnetic moment √35 is true for which of the following pair :
For the four successive transition elements (Cr, Mn, Fe and Co), what is the order of stability of their +2 states?
(At. Nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)
|Cr2+/Cr||−0.9 V||Cr3+/Cr2+||−0.4 V|
|Mn2+/Mn||−1.2 V||Mn3+/Mn2+||+1.5 V|
|Fe2+/Fe||−0.4 V||Fe3+/Fe2+||+0.8 V|