Final answer:
The oxidation number of silver (Ag) in its elemental form (Ag(s)) is 0.
Step-by-step explanation:
The student has asked to identify the oxidation number of silver (Ag) in Ag(s), which stands for silver in its solid, elemental form.
According to the rules for assigning oxidation numbers, atoms in their elemental state are assigned an oxidation number of 0. Therefore, the oxidation number for the underlined atom Ag in Ag(s) is 0.