Answer
Fe (s) is negative
Ag (s) is positive
Work Step by Step
Fe (s) is releasing electron and Ag (s) is accepting electrons (see half reactions in part (b))
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.