Select the strongest reducing agent from amongst the substances involved in the following half-reactions.
Cl₂(g) + e⁻ → 2Cl⁻(aq) +1.36 V
Br₂+e⁻→ 2Br⁻ (aq) +1.09V
Sn₂⁺ +2e⁻ → Sn -0.14V
[Pb. CET 1989]
a) Cl⁻
b) Br⁻
c) Sn
d) Sn²⁺