What is symbolic representaiton of given following reaction.
`Fe_((S)) + Cd_((aq))^(2+) hArr Fe_((aq))^(2+)+Cd_((S))`

Options

A. `""^(Theta)Fe_((S))|Fe_((1M))^(2+)||Cd_((S))|Cd_((1M))^(2+)o+`
B. `""^(Theta)Cd_((S))|Cd_((1M))^(2+)||Fe_((1M))^(2+)|Fe_((S))o+`
C. `""^(Theta)Cd_((S))|Cd_((1M))^(2+)||Fe_((S))|Fe_((1M))^(2+)o+`
D. `""^(Theta)Fe_((S))|Fe^(2+)(1M)||Cd_((1M))^(2+)|Cd_((S))o+`

Answer

D

Explanation

`""^(Theta)Fe_((S))|Fe^(2+)(1M)||Cd_((1M))^(2+)|Cd_((S))o+`
`Fe_((S)) to Fe_((aq))^(2+)+2e^(-)` Oxidation (Anode)
`Cd_((aq))^(2+)+2e^(-) to Cd_((S))` Reduction (Cathode)
`therefore ""^(Theta)Fe_((S))|Fe_((1M))^(2+)||Cd_((1M))^(2+)|Cd_((S))o+`