1. According to IUPAC conventions,
The electrode of a galvanic cell where de-electronation or oxidation takes place releasing electrons is called anode.
Zn(s) → \(Zn^{2+}_{(aq)}\) + 2e-
2. The electrons released due to oxidation reaction are accumulated on the metal electrode surface charging it negatively.
Hence anode in the galvanic cell is considered to be negative.
