Question

Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest $(E^o_{M^{3+}/M^{2+}})$ value ?
(a) Cr(Z = 24)
(b) Mn(Z = 25)
(c) Fe(Z = 26)
(d) Co(Z = 27)

Answer 1

(d) Co (Z=27)

hope this answer helpful u plz