Read the provided excerpt from Shriver and Atkins about the Marcus cross-relation, then use Table 21.13 to answer the following question. Calculate the rate constants for electron transfer in the oxidation of [V(OH2)6]2+ (e0(V3+/V2+) = - 0.255 V) by the oxidants (a) [Ru(NH3)6]3+ (e0(Ru3+/Ru2+) = + 0.07 V), and (b) [Co(NH3)6]3+ (e0(Co3+/Co2+) = 0.10 V). Comment on the relative sizes of the rate constants