The correct code for stability, of oxidation states for given cations is :<br>(i) Pb2+ > Pb4+, Tl+ < β p Block Elements Chemistry Question
Question
The correct code for stability, of oxidation states for given cations is :<br>(i) Pb2+ > Pb4+, Tl+ < Tl3+<br>(ii) Bi3+ < Sb3+, Sn2+ < Sn4+<br>(iii) Pb2+ > Pb4+, Bi3+ > Bi5+<br>(iv) Tl3+ < In3+, Sn2+ > Sn4+<br>(v) Sn2+ < Pb2+, Sn4+ > Pb4+<br>(vi) Sn2+ < Pb2+, Sn4+ < Pb4+
π‘ Solution & Explanation
Step 1: Tin (Sn) belongs to Group 14, where the stability of the +4 oxidation state is higher than that of +2 for the lighter members. Step 2: Because Sn4+ is highly stable, Sn2+ readily acts as a reducing agent by losing two electrons to convert into Sn4+: Sn^2+ -> Sn^4+ + 2e^-. Step 3: Therefore, the reducing nature of SnCl2 is due to Sn4+ being more stable than Sn2+, matching option (c).