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F2 is the strongest oxidising agent as it has highest reduction potential while I− is the strongest reducing agent since it has the lowest reduction potential.

1. Higher the value of reduction potential, higher will be the oxidising power whereas the lower the value of reduction potential higher will be the reducing power.
2. Carbon has the maximum oxidation state of +4, therefore carbon dioxide (CO2) cannot act as a reducing agent.
3. F2 is the strongest oxidising agent as it has highest reduction potential while I− is the strongest reducing agent since it has the lowest reduction potential.
4. Reducing power: K > Al > Cr > Ag

Correct answer: Higher the value of reduction potential, higher will be the oxidising power whereas the lower the value of reduction potential higher will be the reducing power.

Solution

Option A is correct because the oxidising and reducing power of a species is directly related to its reduction potential. A higher reduction potential indicates a stronger oxidising agent, while a lower reduction potential indicates a stronger reducing agent.

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