Standard electrode potential of three metals X, Y and Z are -1.2 V, +0.5 V and -3.0 V respectively. The reducing power of these metals will be

Step-by-step solution

Standard electrode potential generally refers to the standard reduction potential. A lower (more negative) standard reduction potential indicates a greater tendency for the metal to get oxidized, which means it acts as a stronger reducing agent. The given standard reduction potentials are: E^ _ X = -1.2 V E^ _ Y = +0.5 V E^ _ Z = -3.0 V Comparing the values, we have -3.0 V Since Z has the most negative standard reduction potential, it is the strongest reducing agent, followed by X and then Y . Therefore, the order