What is the weakest acid from the following? Why?
H₂Se, AsH₃, H₂Te

• A. AsH₃ is the weakest acid because it has the least polar H—X bond.
• B. H₂Se is the weakest acid because Se has the most polar H—X bond.
• C. H₂Te is the weakest acid because Te has the largest size.

Answer: (A)