Question

E°M3/M2 for Cr is -0.41V but for V is -0.26 v give reason​

Answer 1

Answer:

Cr+3 is more stable than Cr+2

Just write Configuration :-

Cr = {Ar} 4s1 3d5

Cr+3 = {Ar} 3d3

Cr+2 = {Ar} 3d4

You Know d3 is More stable Than d4 according to Crystal Field Theory

V- {Ar} 4s2 3d3

Vanadium is stable in V+2 not V+3

Thanks for Reading