Valency of silver in AG2S is

• In the compound Ag₂S, there are two silver (Ag) atoms and one sulfur (S) atom.
• Sulfur typically has a valency of -2.
• To balance the -2 charge from sulfur, the two silver atoms together must have a +2 charge.
• Therefore, each silver atom has a valency of +1.

This aligns with the information provided by Vedantu, which states that silver commonly exhibits a +1 valency, especially in compounds like Ag₂S.

So, the correct answer is: +1.