Cd(s)/Cd(NO3)^2(aq) // AgNO^3 (aq)/ Ag(s)

strongest oxiding and reducing agent

In the given half-reactions:

1) Cd(s) -> Cd(NO3)2(aq) + 2e-

2) 2AgNO3(aq) + 2e- -> 2Ag(s) + 2NO3(aq)

- Cd(s) is being oxidized to Cd(NO3)2(aq) in half-reaction 1, so it is acting as a reducing agent.

- AgNO3(aq) is being reduced to Ag(s) in half-reaction 2, so it is acting as an oxidizing agent.

Hence, the strongest reducing agent is Cd(s) and the strongest oxidizing agent is AgNO3(aq).