Question
Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is excepted to have the highest E0M3+/M2+ value?
Answer: Option A
:
A
Generally, standard reduction potential value increases from left to right in the period of d-block elements but there are some exceptions. Mn3+ and Co3+ behave as strongest oxidizing agent in aqueous solution.E0Co3+/Co2+ = + 1.97V is highest suggesting thereby that Co3+ is most stable in aqueous solution. Thus, Co (Z=27) has the highest E0Co3+/Co2+
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:
A
Generally, standard reduction potential value increases from left to right in the period of d-block elements but there are some exceptions. Mn3+ and Co3+ behave as strongest oxidizing agent in aqueous solution.E0Co3+/Co2+ = + 1.97V is highest suggesting thereby that Co3+ is most stable in aqueous solution. Thus, Co (Z=27) has the highest E0Co3+/Co2+
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